The Next Big Five Inventory (BFI-2): Developing and Assessing a Hierarchical Model with 15 Facets to Enhance Bandwidth, Fidelity, and Predictive Power

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PERSONALITY PROCESSES AND INDIVIDUAL DIFFERENCES

The Next Big Five Inventory (BFI-2): Developing and Assessing a Hierarchical Model With 15 Facets to Enhance Bandwidth, Fidelity, and Predictive Power

Christopher J. Soto Oliver P. John Colby College University of California, Berkeley

Three studies were conducted to develop and validate the Big Five Inventory-2 (BFI-2), a major revision of the Big Five Inventory (BFI). Study 1 specified a hierarchical model of personality structure with 15 facet traits nested within the Big Five domains, and developed a preliminary item pool to measure this structure. Study 2 used conceptual and empirical criteria to construct the BFI-2 domain and facet scales from the preliminary item pool. Study 3 used data from 2 validation samples to evaluate the BFI-2’s measurement properties and substantive relations with self-reported and peer-reported criteria. The results of these studies indicate that the BFI-2 is a reliable and valid personality measure, and an important advance over the original BFI. Specifically, the BFI-2 introduces a robust hierarchical structure, controls for individual differences in acquiescent responding, and provides greater bandwidth, fidelity, and predictive power than the original BFI, while still retaining the original measure’s conceptual focus, brevity, and ease of understanding. The BFI-2 therefore offers valuable new opportunities for research examining the structure, assessment, development, and life outcomes of personality traits.

Keywords: 5-factor model, Big Five, facets, personality measurement, personality structure

Many important individual differences in people’s patterns of Inventory (BFI), which assesses the prototypical features of each thinking, feeling, and behaving can be summarized in terms of the Big Five domain using 44 short and easy-to-understand phrases Big Five personality domains, which we label Extraversion, (John, Donahue, & Kentle, 1991; see John & Srivastava, 1999; Agreeableness, Conscientiousness, Negative Emotionality (alter- John et al., 2008). The BFI has been used in hundreds of studies to natively labeled Neuroticism vs. Emotional Stability), and Open- date, and has demonstrated considerable reliability, validity, and Mindedness (alternatively labeled Openness to Experience, Intel- utility. However, the 25 years since the BFI’s original develop- lect, or Imagination; Goldberg, 1993b; John, Naumann, & Soto, ment have also yielded important advances in our understanding of 2008; McCrae & Costa, 2008). Over the past quarter century, both personality structure and psychological assessment. Thus, the scientific consensus regarding the structure and basic definitions of present research was conducted to integrate these advances into the the Big Five has generated an explosion of research documenting BFI, while simultaneously addressing a number of substantive and their causes, correlates, and consequences. A considerable portion measurement issues. This research program culminates with the of this research has measured personality traits using the Big Five development and initial validation of the Big Five Inventory-2 (BFI-2).

The Big Five Inventory: History and Key Features This article was published Online First April 7, 2016. Christopher J. Soto, Department of Psychology, Colby College; Oliver The original BFI was developed with three key goals in mind. This document is copyrighted by the American Psychological Association or one of its allied publishers. P. John, Department of Psychology and Institute of Personality and Social First, it was designed to focus on the prototypical components of This article is intended solely for the personal use of the individual user and is not to be disseminated broadly. Research, University of California, Berkeley. each Big Five domain. This focus was achieved through a com- This research was supported by faculty research grants from Colby bined rational-empirical approach to scale construction. Specifi- College to Christopher J. Soto, and from the University of California, cally, a panel of expert judges reviewed the 300 items of the Berkeley to Oliver P. John. For a downloadable version of the BFI-2 and Adjective Check List (ACL; Gough & Heilbrun, 1983) and iden- more information, visit the Colby Personality Lab website (http://www tified those that were conceptually relevant to one of the Big Five. .colby.edu/psych/personality-lab/). To initiate a translation, short form, or Analyses of observer-reports were then conducted to test and other adaptation of the BFI-2, please contact the authors. The authors thank Juliana Pham for her assistance with this research, and Wiebke Bleidorn for refine the selected adjectives’ Big Five structure. This two-stage her helpful comments on a draft of this article. process yielded a set of approximately 100 trait-descriptive adjec- Correspondence concerning this article should be addressed to Christo- tives that were conceptually and empirically central to the Big pher J. Soto, Department of Psychology, Colby College, 5550 Mayflower Five, and these adjectives provided a lexical foundation from Hill, Waterville, ME 04901. E-mail: [email protected] which to develop the BFI (John, 1989, 1990).

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A second key goal for the BFI was clarity. Because trait- within their Abridged Big Five Circumplex (AB5C) model. Sauc- descriptive adjectives are understood and rated more consistently ier and Ostendorf (1999) empirically examined the hierarchical when they are accompanied by elaborations or definitions (Gold- structure of trait-descriptive adjectives in English and German, and berg & Kilkowski, 1985), the prototypical Big Five adjectives identified 18 facet-level subcomponents (3 or 4 within each do- identified by John (1989, 1990) were elaborated into short phrases main) that replicated between the two languages. Each of these for the BFI. Specifically, most BFI items are structured in one of early projects identified a somewhat different set of Big Five three ways: (a) adjective, synonym (e.g., “Is outgoing, sociable”), facets, but more recent work has begun to integrate their results. (b) adjective, definition (e.g., “Is relaxed, handles stress well”), or For example, one influential project (DeYoung, Quilty, & Peter- (c) adjective in context (e.g., “Is a reliable worker”). These short son, 2007) used factor analysis to derive two major and maximally phrases retain the simplicity and brevity of adjectival items, while independent “aspects” of each Big Five domain that represent addressing the limitation that individual adjectives often have commonalities among the 75 total facets proposed by Costa and ambiguous or multiple meanings. McCrae (1995) and Hofstee et al. (1992). Similarly, a broad review A final key goal was efficiency. Each BFI scale is long enough of the Big Five literature (John et al., 2008) highlighted overlaps to be reliable and provide reasonably broad coverage of its Big between the facets conceptually defined by Costa and McCrae Five domain, but still short enough to conserve research time and (1995), the lexical subcomponents empirically identified by Sauc- prevent respondent fatigue. At 44 total items, the BFI can be ier and Ostendorf (1999), and the AB5C facets best represented on completed in 5 to 10 min. At the time of its development, the BFI the classic California Psychological Inventory (Gough, 1957; see was considerably shorter than most available broadband personal- Soto & John, 2009b). These integrative papers suggest that, within ity inventories, which typically included hundreds of items. each Big Five domain, a large amount of more-specific personality We sought to retain these three key strengths—focus, clarity, information can be captured by two to four facet traits that con- and brevity—while developing the BFI-2. Specifically, we wanted sistently replicate across alternative hierarchical models. the BFI-2 to capture the prototypical features of each Big Five The original BFI was developed before all of these projects, and domain, to use easy-to-understand phrases, and to be short enough was therefore not intended as a hierarchical measure. However, it for research participants to complete in 10 min or less. However, is now clear that facet-level traits capture meaningful personality we also aimed to address some limitations of the original BFI by information, that many facets show distinctive developmental integrating important advances from research on personality struc- trends, and that individual facets relate uniquely with important ture and psychological assessment. behaviors and life outcomes (e.g., Ashton et al., 1995; Costa & McCrae, 1995; Hirsh, DeYoung, Xiaowen Xu, & Peterson, 2010; Personality Structure and Assessment: Bandwidth, Paunonen & Ashton, 2001; Soto, John, Gosling, & Potter, 2011; Fidelity, and Hierarchy Terracciano, McCrae, Brant, & Costa, 2005). In a previous project, we therefore developed post hoc facet scales for the original BFI Personality traits can be defined with different degrees of con- (Soto & John, 2009a). These post hoc facet scales have proven ceptual breadth. A broadly defined trait (e.g., Conscientiousness) useful in a number of studies (e.g., Markowitz, Goldberg, Ashton, has the advantage of high bandwidth: it efficiently summarizes a & Lee, 2012; Soto et al., 2011), but they also have important large amount of behavioral information, and can predict a variety limitations. Most notably, each BFI domain scale has only 8 to 10 of relevant criteria (John et al., 2008; Ozer & Benet-Martínez, items, and these items were not developed with facet-level distinc- 2006). Conversely, a narrowly defined trait (e.g., Organization) tions in mind. Thus, the original BFI includes only limited content has the advantage of high fidelity: it provides a more precise relevant to many Big Five facets. In constructing the BFI-2, we description of behavior, and can predict closely matched criteria therefore aimed to develop a robust hierarchical structure with with greater accuracy (Ashton, Jackson, Paunonen, Helmes, & reliable domain and facet scales that can jointly offer the advan- Rothstein, 1995; Paunonen & Ashton, 2001). The fact that traits tages of high bandwidth and high fidelity. with different degrees of breadth have different advantages and A second important, but less frequently noted, implication of disadvantages is known as the bandwidth-fidelity tradeoff (Cron- bandwidth and fidelity is that the Big Five domains themselves can bach & Gleser, 1957; John, Hampson, & Goldberg, 1991). be conceptualized and assessed more broadly or more narrowly. The bandwidth-fidelity tradeoff has two key implications for For example, a narrowly defined version of Conscientiousness This document is copyrighted by the American Psychological Association or one of its allied publishers. conceptualization and measurement of the Big Five. First, one could focus on a single, central facet, such as Organization. A This article is intended solely for the personal use of the individual user and is not to be disseminated broadly. possible solution to this tradeoff is hierarchical assessment. Each moderately broad version of Conscientiousness could add a few broad Big Five domain can be conceptualized as subsuming sev- complementary facets such as Productiveness and Responsibility, eral more-specific “facet” traits, and a single instrument can si- whereas a very broad version could add even more peripheral multaneously assess personality at both the domain and facet facets such as conventionality and virtue (DeYoung et al., 2007; levels (Costa & McCrae, 1995). Domain-level scales provide the Hofstee et al., 1992; MacCann, Duckworth, & Roberts, 2009; breadth and efficiency of high bandwidth, whereas facet-level Roberts, Bogg, Walton, Chernyshenko, & Stark, 2004; Roberts, subscales provide the descriptive and predictive precision of high Chernyshenko, Stark, & Goldberg, 2005). Similarly, any individ- fidelity. A growing body of research has adopted this hierarchical ual Big Five facet can be defined as including a relatively broad or approach. For example, Costa and McCrae (1995) developed a set narrow range of lower-level “nuance” traits (McCrae, 2015). For of 30 facets (6 per Big Five domain) from a conceptual review of example, a narrow version of Organization could focus exclusively the personality literature followed by additional psychometric re- on preference for Order and structure, while a broader version of search. Hofstee, De Raad, and Goldberg (1992) used a circumplex this facet could include additional nuances such as neatness and approach to define an even larger set of 45 facets (9 per domain) attention to detail.

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The choice to define and assess a relatively broad or narrow affect the item-level factor structure; specifically, they tend to pull version of a particular trait will affect the resulting measure’s true-keyed and false-keyed items toward separate factors, and can psychometric properties and substantive relations with external even lead to the emergence of an additional method factor repre- criteria. For example, a narrow measure of a Big Five domain will senting acquiescence (McCrae, Herbst, & Costa, 2001; Ten Berge, tend to have greater overlap between its items (because these items 1999). Such item-level acquiescence effects have been docu- will all assess closely related patterns of behavior), and therefore mented for the BFI and many other psychological measures (e.g., stronger interitem correlations and greater internal consistency John et al., 2008; Ten Berge, 1999). Acquiescence effects are reliability (John & Soto, 2007). Moreover, an inventory that nar- particularly pronounced in samples of children and adolescents, as rowly assesses each Big Five domain will tend to have a clear and well as adults with low levels of educational attainment, because simple five-factor structure, because greater internal consistency individual differences in acquiescence tend to be greater in these within each domain will enhance primary factor loadings, whereas groups (Rammstedt & Farmer, 2013; Soto, John, Gosling, & the exclusion of peripheral facets—which often combine content Potter, 2008). from multiple Big Five domains (Hofstee et al., 1992)—will At the scale level, individual differences in acquiescence can suppress secondary loadings. Conversely, an inventory that affect internal consistency reliability (Soto et al., 2008). Specifi- broadly assesses each Big Five domain will tend to have lower cally, acquiescence variance tends to inflate the internal consis- internal consistency and a more complex factor structure due to its tency of scales with a substantial imbalance of true-keyed and inclusion of peripheral content, but this same peripheral content false-keyed items by positively biasing correlations between pairs will also allow it to accurately predict a wider range of criteria. of like-keyed items. Acquiescence can also bias correlations be- These same considerations also apply at the facet level. Scales tween pairs of imbalanced scales. An interscale correlation will be measuring narrowly defined facets will benefit from high internal positively biased if both scales have a majority of true-keyed items consistency and a clear facet-level factor structure, but overly (or of false-keyed items), and negatively biased if one scale has narrow facets will have limited predictive relevance (John & Soto, mostly true-keyed items while the other has mostly false-keyed 2007; McCrae, 2015). items. The original BFI has relatively balanced scales for four of The original BFI was developed from trait-descriptive adjec- the Big Five domains: Extraversion, Agreeableness, Conscien- tives that expert judges identified as clearly related to one—and tiousness, and Negative Emotionality. Each of these scales has five only one—Big Five domain. This strict inclusion criterion resulted true-keyed items and three or four false-keyed items. However, in tightly focused domain scales with correspondingly strong in- reflecting the fact that many more adjectives in natural language ternal consistency and a clear Big Five structure (John et al., 2008). describe high levels than low levels of intellectual and creative However, in developing the BFI-2 we aimed to somewhat broaden interests (Hofstee et al., 1992; John, 1989, 1990), the BFI Open- the five domains’ conceptualization and measurement. We ex- Mindedness scale includes eight true-keyed items and only two pected that this greater breadth would provide a more comprehen- false-keyed items. Moreover, some of the post hoc BFI facet scales sive representation of each domain’s content and enhance their include only true-keyed or only false-keyed items (Soto & John, substantive relations with external criteria. At the facet level, we 2009a). These imbalanced scales are particularly susceptible to the pursued the opposite goal. Because the original BFI was developed influence of acquiescence. without facet-level distinctions in mind, it represents some facets To address this issue, we aimed to construct content-balanced more extensively than others (John et al., 2008). For example, the scales for the BFI-2 at both the domain and facet levels. Balancing BFI Conscientiousness scale includes more items related to Pro- the number of true-keyed and false-keyed items on each scale ductiveness than to Organization. Moreover, some items include would clearly distinguish meaningful personality information from content relevant to multiple facets (e.g., “Does a thorough job” is acquiescence. Specifically, balanced keying would automatically relevant to both Productiveness and Organization). When con- control for acquiescence at the scale level, because yea-saying (or structing post hoc facet scales for the original BFI, this led some nay-saying) in response to a scale’s true-keyed items would be facets to be overly broad and poorly differentiated (Soto & John, canceled out by responding similarly to its equal number of false- 2009a). In developing the BFI-2, we aimed to draw sharper dis- keyed items. Content-balanced scales would also allow researchers tinctions between facets, to increase differentiation between the facet scales and clarify the measure’s hierarchical structure. to easily control for acquiescence at the item level by centering This document is copyrighted by the American Psychological Association or one of its allied publishers. each individual’s set of item responses around their within-person

This article is intended solely for the personal use of the individual user and is not to be disseminated broadly. mean (i.e., their mean response to the full item set, without Acquiescent Response Style: Problems and Solutions reversing the false-keyed items; see Soto et al., 2008). Acquiescent response style is the tendency of an individual to consistently agree (yea-saying) or consistently disagree (nay- Adopting More Easily Understood Labels for N and O saying) with questionnaire items, regardless of their content (Jack- son & Messick, 1958). The presence of individual differences in While pursuing these goals for the BFI-2, we decided to make acquiescence can distort the reliability, validity, and structure of a one additional change from the original BFI. Specifically, the psychological measure at both the item and scale levels. At the BFI-2 adopts new labels for two of the Big Five domains. Re- item level, acquiescence variance tends to positively bias interitem searchers have long acknowledged the difficulty of choosing ac- correlations: positive correlations (e.g., between two true-keyed curate and easily understood labels for the Big Five, because each items on the same scale) tend to become stronger, whereas nega- of these broad personality domains “is not so much one thing as a tive correlations (e.g., between a true-keyed item and a false-keyed collection of many things that have something in common” (Sauc- item) tend to become weaker. These biased correlations, in turn, ier & Goldberg, 2003, p. 14). This challenge has proven particu-

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larly difficult for the domains traditionally labeled Neuroticism Method and Openness to Experience. The label Neuroticism is rooted in the term neurosis, which first Participants and procedure. Study 1 analyzed data from (in 18th and 19th century medicine) connoted a general disorder of 1,137 members of the Eugene-Springfield Community Sample the nervous system, and later (in early 20th century psychiatry) a (ESCS), a sample of adults residing in Oregon (see Goldberg, type of mental illness characterized by psychological distress 1999). The present sample ranged in age from 18 to 89 years old ϭ ϭ (Widiger, 2009). Since the mid-20th century, personality research- (M 49.64, SD 13.02), and included an approximately equal ers have used the term Neuroticism to describe an individual’s number of men and women (52.9% female, 46.5% male, 0.6% did general tendency to experience negative emotions such as Anxiety not report gender). Reflecting the local demographics, almost all and sadness (Eysenck, 1967; John et al., 2008). However, in (97.7%) described themselves as White/Caucasian. Over several everyday language the adjective “neurotic” retains its clinical years, ESCS members have completed a number of psychological connotation (Merriam-Webster, 2005). The BFI-2 therefore adopts measures in exchange for compensation. The measures used in the the label Negative Emotionality (Clark & Watson, 2008) to high- present study are described below. light this domain’s focus on negative emotional experiences while Measures. more clearly distinguishing it from psychiatric illness. Big Five Inventory. As described above, the original Big Five The term Openness to Experience was coined by Rogers (1954; Inventory (BFI; John, Donahue, & Kentle, 1991; see John et al., see also McCrae & Costa, 2010) to describe the extent to which an 2008) was developed to measure the prototypical features of each individual prefers to have a wide versus narrow range of percep- Big Five domain. Its 44 items are short, descriptive phrases that tual, cognitive, and affective experiences. Compared with alterna- respondents rate on a 5-point scale ranging from disagree strongly tive labels such as Intellect, Imagination, or Culture, Openness to agree strongly. A total of 641 ESCS members completed the more fully conveys the broad scope of this personality domain and BFI; in this sample, the domain scales’ alpha reliabilities were .86 more clearly distinguishes it from intelligence (McCrae, 1994). for Extraversion, .82 for Agreeableness, .83 for Conscientiousness, However, nonpsychologists often misinterpret it as connoting .85 for Negative Emotionality, and .84 for Open-Mindedness. openness to social experiences (i.e., Extraversion) rather than Trait-descriptive adjectives. Members of the ESCS rated mental experiences (Sneed, McCrae, & Funder, 1998). For the themselves using a total of 885 trait-descriptive adjectives. These BFI-2, we therefore adopt the label Open-Mindedness, which adjectives included 100 unipolar Big Five markers (Goldberg, retains Openness’ sense of breadth but clarifies this domain’s 1992), the 40 Big Five Mini-Markers (Saucier, 1994), and a set of focus on an individual’s mental rather than social life. the 500 most familiar English trait-descriptive adjectives (Saucier, 1997), among others. The adjectives were administered in two lists: a 360-item list rated using a 9-point scale, and a 525-item list Overview of the Present Research rated using a 7-point scale. Both rating scales ranged from ex- In sum, we developed the BFI-2 with four major goals in mind. tremely inaccurate to extremely accurate as a description of the First, we aimed to establish a robust hierarchical structure, with respondent. In the present sample, 1,131 participants completed at multiple facet traits nested within each Big Five domain. Second, least one of the two adjective lists, and most participants (685) we aimed to balance bandwidth and fidelity at both the domain and completed both. facet levels, in order to enhance descriptive and predictive power. International Personality Item Pool. The International Per- Third, we aimed to minimize the influence of acquiescence sonality Item Pool (IPIP; Goldberg, 1999; Goldberg et al., 2006)is through the construction of content-balanced scales. Finally, we a large, publicly available set of personality-relevant questionnaire aimed to retain the focus, clarity, and brevity of the original BFI. items. Approximately 750 IPIP items were translated from Dutch We pursued these goals through a program of three studies. Study to English (Hendriks, 1997), approximately 500 more (Goldberg, 1 conceptually defined a hierarchical structure for the BFI-2 and 1999) were developed to measure the Abridged Big Five Cir- developed a preliminary item pool to measure this structure. Study cumplex model (AB5C; Hofstee et al., 1992), and several addi- 2 refined this preliminary pool into the final BFI-2 domain and tional, smaller item sets have been added to the IPIP over time facet scales. Study 3 examined the basic measurement properties, (Goldberg et al., 2006). All of the IPIP items are short phrases multidimensional structure, and nomological network of the rated using a 5-point scale ranging from very inaccurate to very This document is copyrighted by the American Psychological Association or one of its allied publishers. BFI-2. Collectively, these studies drew on data from community, accurate as a description of the respondent. The present study This article is intended solely for the personal use of the individual user and is not to be disseminated broadly. student, and Internet samples, from a number of established per- examined a total of 2,552 IPIP items administered to the ESCS in sonality measures, and from self-reported and peer-reported valid- 12 lists. A total of 995 participants completed at least one of these ity criteria. lists, with 401 participants completing all 12 lists.

Study 1 Results and Discussion Study 1 was conducted to define the BFI-2’s hierarchical struc- This study proceeded in three phases. First, we defined the ture—by identifying a set of conceptually and empirically prom- BFI-2’s hierarchical structure by identifying a set of conceptually inent facet traits within each Big Five domain—and to develop a and empirically prominent facet traits within each Big Five do- preliminary BFI-2 item pool that could be used to measure this main. Second, we identified potential item content relevant to hierarchical structure. Ideally, this item pool should be broad, measuring this hierarchical structure by analyzing trait-descriptive deep, and balanced, with each domain and facet represented by adjectives and phrases. Third, we used this content to construct a several candidate items. pool of candidate items for the BFI-2.

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Phase 1: Selecting and defining facets. Our first step was to activity level, and these links cannot be fully explained by Socia- select and conceptually define a set of facet traits within each Big bility (Lucas, Le, & Dyrenforth, 2008; Watson & Clark, 1997). We Five domain. Previous work has found that approximately two to therefore selected Sociability, Assertiveness, and Energy Level as four lower-level traits consistently replicate across alternative hi- the three BFI-2 Extraversion facets. erarchical models of the Big Five (John et al., 2008), and that this Prosocial emotion, cognition, and behavior are closely related relatively small number of traits can capture a large amount of components of Agreeableness that influence, but can also be specific personality information (DeYoung et al., 2007). We there- somewhat distinguished from, each other (Graziano & Tobin, fore defined three facets per BFI-2 domain. Our selection of facets 2009). Lexical research suggests Compassion (active emotional was guided by previous research examining hierarchical person- concern for others’ well-being) as a particularly central and factor- ality structure and measurement (e.g., DeYoung et al., 2007; pure facet of Agreeableness, one that focuses on the domain’s Goldberg, 1999; Hofstee et al., 1992; McCrae & Costa, 2010; affective component (Goldberg, 1999; Hofstee et al., 1992). Po- Saucier & Ostendorf, 1999). Specifically, for each Big Five do- liteness or Respectfulness (treating others with regard for their main we began by selecting a factor-pure facet: a facet that personal preferences and rights, while inhibiting antagonistic and previous research has identified as central to its own domain and aggressive impulses) highlights a key behavioral facet of Agree- independent from the other four domains (Hofstee et al., 1992). ableness (DeYoung et al., 2007), whereas interpersonal trust (hold- These factor-pure facets should empirically anchor the Big Five ing positive generalized beliefs about others) represents an impor- domains in multidimensional space. For each domain, we then tant cognitive facet of this domain (Goldberg, 1999; McCrae & selected two complementary facets that are prominent in the per- Costa, 2010). We therefore selected Compassion, Respectfulness, sonality literature and represented in the original BFI’s item con- and Trust as the BFI-2 Agreeableness facets. tent. These complementary facets should conceptually broaden Previous research has proposed several facet-level models of each domain and provide continuity with the original BFI and Conscientiousness (e.g., MacCann et al., 2009; Roberts et al., previous research on personality structure. Table 1 lists the 15 2004; Roberts et al., 2005). Despite their differences, these models BFI-2 facets alongside similar traits proposed by four influential have consistently included three key facets. Organization or order- hierarchical models of the Big Five (DeYoung et al., 2007; Hofstee liness (preference for Order and structure) is a factor-pure, largely et al., 1992; McCrae & Costa, 2010; Saucier & Ostendorf, 1999). inhibitory facet of Conscientiousness (Hofstee et al., 1992; Saucier Previous research on personality structure has consistently iden- & Ostendorf, 1999). Productiveness or industriousness (work ethic tified Sociability (desire to socially approach and engage with and persistence while pursuing goals) captures a more proactive others) as a facet central to Extraversion and orthogonal to the facet of Conscientiousness, and helps explain why this domain is other Big Five domains (Goldberg, 1999; Hofstee et al., 1992; a powerful predictor of academic achievement and job perfor- McCrae & Costa, 2010; Saucier & Ostendorf, 1999). Assertiveness mance (Barrick & Mount, 1991; Duckworth, Peterson, Matthews, (willingness to express personal opinions and goals in social & Kelly, 2007; Poropat, 2009). Finally, Responsibility or reliabil- situations) is a second prominent facet, and is empirically distinct ity (commitment to meeting duties and obligations) represents the from Sociability (DeYoung et al., 2007). Finally, Extraversion has prosocial component of Conscientiousness, by capturing the de- been consistently linked with positive affect (especially positively gree to which a person can be depended upon by others (McCrae aroused states such as Enthusiasm and excitement) and physical & Costa, 2010; Roberts et al., 2004, 2005). We therefore selected

Table 1 The BFI-2 Facets Aligned With Previous Hierarchical Big Five Models

BFI-2 domains and NEO PI-R facets AB5C facets Lexical subcomponents Big Five aspects facets (McCrae & Costa, 2010) (Goldberg, 1999; Hofstee et al., 1992) (Saucier & Ostendorf, 1999) (DeYoung et al., 2007)

Extraversion Sociability Gregariousness Gregariousness Sociability Enthusiasm Assertiveness Assertiveness Assertiveness Assertiveness Assertiveness

This document is copyrighted by the American Psychological Association or one of its allied publishers. Energy Level Positive Emotions/Activity — Activity-adventurousness Enthusiasm

This article is intended solely for the personal use ofAgreeableness the individual user and is not to be disseminated broadly. Compassion Altruism Understanding Warmth-affection Compassion Respectfulness Compliance Cooperation Gentleness Politeness Trust Trust Pleasantness — — Conscientiousness Organization Order Orderliness Orderliness Orderliness Productiveness Self-Discipline Efficiency Industriousness Industriousness Responsibility Dutifulness Dutifulness Reliability — Negative Emotionality Anxiety Anxiety Toughness (R) Emotionality Withdrawal Depression Depression Happiness (R) Insecurity Withdrawal Emotional Volatility Angry Hostility Stability (R) Irritability Volatility Open-Mindedness Intellectual Curiosity Ideas Intellect Intellect Intellect Aesthetic Sensitivity Aesthetics Reflection — Openness Creative Imagination Fantasy Ingenuity Imagination-creativity —

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Organization, Productiveness, and Responsibility as the BFI-2 with BFI Agreeableness and .17 with “energetic.” “Act as a Conscientiousness facets. leader” and “dominant” were therefore noted as potential sources Negative Emotionality represents individual differences in the of Assertiveness content. frequency and intensity of negative affect (Clark & Watson, 2008; Phase 3: Constructing a preliminary item pool. Drawing on Widiger, 2009). Following research on basic emotions (Ekman, the results of Phase 2, we constructed a preliminary pool of 110 1992), facet-level models of this domain typically distinguish potential BFI-2 items. This pool consisted of the 44 original BFI between types of negative affect, especially fear/anxiety, sadness/ items, revised versions of 19 BFI items, and 47 new items. The 19 depression, and irritation/anger (Goldberg, 1999; McCrae & Costa, revised versions included original BFI items edited to (a) clarify 2010; Saucier & Ostendorf, 1999). Of these, the tendency to their associations with the Big Five domains (e.g., the item “Can experience anxiety and fear tends to be most central and factor- be cold and aloof” was revised to “Can be cold and uncaring” to pure (Hofstee et al., 1992). The tendency toward Depression and strengthen its association with Agreeableness and weaken its as- sadness is often accompanied by low levels of energy and arousal, sociation with Extraversion), (b) clarify their associations with the and thus low Extraversion, whereas volatile mood swings often BFI-2 facets (e.g., the item “Is a reliable worker” was revised to “Is disrupt social interactions, and thus relate with low Agreeableness reliable, can always be counted on” to strengthen its association (Goldberg, 1999; McCrae & Costa, 2010). We therefore selected with Responsibility and weaken its association with Productive- Anxiety, Depression, and Emotional Volatility as the BFI-2 Neg- ness), and (c) make them easier to understand by elaborating their ative Emotionality facets. meaning (e.g., the item “Is inventive” was revised to “Is inventive, Despite overall consensus around the Big Five model, there has finds clever ways to do things”) or replacing difficult words (e.g., been considerable disagreement regarding the defining features the item “Values artistic, aesthetic experiences” was revised to and optimal label for its fifth and final domain (DeYoung, 2014). “Values art and beauty”). The 47 new items were constructed Some researchers prefer the label Intellect, defined by intellectual using content from the trait-descriptive adjectives and IPIP items interests and enjoyment of thinking (e.g., Goldberg, 1999), some identified in Phase 2. For example, the adjective “dominant” and prefer Imagination, defined by creativity and originality (e.g., the IPIP item “Act as a leader” were combined to form the Saucier, 1992), and others prefer Openness to Experience as a candidate Assertiveness item “Is dominant, acts as a leader.” We broader alternative that is primarily defined by intellectual and ensured that the preliminary pool included at least three true-keyed artistic interests but also includes a number of other characteristics and three false-keyed items for each BFI-2 facet, to facilitate the (e.g., McCrae, 1994). We therefore selected Intellectual Curiosity, construction of content-balanced scales that would automatically Creative Imagination, and Aesthetic Sensitivity as the three BFI-2 control for individual differences in acquiescence. Open-Mindedness facets without a clear expectation that one of these would be uniquely factor-pure. Conclusion Phase 2: Identifying potential item content. After selecting and defining the 15 facet traits described above, our next step was Study 1 yielded two key outcomes. The first was a hierarchical to identify potential item content relevant to each facet. We did this model of personality structure, with 15 facet traits nested within using data from the ESCS. Specifically, from the list of 885 the Big Five domains (see Table 1). This model identifies concep- trait-descriptive adjectives administered to this sample, we identi- tually and empirically prominent Big Five facets from previous fied one to three marker adjectives that seemed particularly central research, and organizes them within an integrative hierarchical to the definition of each facet and did not correlate too strongly structure. We therefore propose that these traits constitute a min- with potential markers of the other same-domain facets. For ex- imally necessary set for capturing facet-level personality informa- ample, within the Extraversion domain, we selected “outgoing,” tion within each Big Five domain. The second key outcome of “sociable,” and “social” as markers of Sociability, “assertive” as a Study 1 was a broad, deep, and balanced pool of 110 potential marker of Assertiveness, and “active,” “energetic,” and “enthusi- BFI-2 items whose content reflects this intended hierarchical struc- astic” as markers of Energy Level. We then examined the corre- ture. lations of these marker adjectives and the original BFI domain scales with the remaining trait-descriptive adjectives, the 2,552 Study 2 IPIP items, and the 44 original BFI items. For each facet, we noted This document is copyrighted by the American Psychological Association or one of its allied publishers. adjectives and items that correlated strongly and uniquely with the Study 2 was conducted to refine the preliminary item pool from This article is intended solely for the personal use of the individual user and is not to be disseminated broadly. marker adjectives and BFI domain scales as potential sources of Study 1 into the final BFI-2. To do this, we administered the content for the BFI-2 item pool. For example, the IPIP item “Act preliminary item pool to a large and diverse sample of adults. We as a leader” correlated .39 with the BFI Extraversion scale and .36 then used these data to select the final set of BFI-2 items, organize with the Assertiveness marker “assertive,” compared with its next- these items into facet and domain scales, and conduct a prelimi- strongest domain-level and facet-level correlations of .25 with BFI nary examination of the BFI-2’s basic measurement properties and Conscientiousness and .26 with “outgoing.” These correlations multidimensional structure. indicate that “Act as a leader” shares more than twice as much variance with Extraversion as with any other Big Five domain (i.e., Method .392/.252 ϭ 2.43), and about twice as much variance with Asser- tiveness as with either of the other proposed Extraversion facets Participants and procedure. Participants in this study were (i.e., .362/.262 ϭ 1.92). Similarly, the trait-descriptive adjective 1,000 adult residents of English-speaking nations who rated them- “dominant” correlated .35 with BFI Extraversion and .46 with selves using the preliminary BFI-2 item pool. They did this at “assertive,” compared with its next-strongest correlations of Ϫ.25 personalitylab.org, a website that offers its visitors free, anony-

BFI-2: THE NEXT BIG FIVE INVENTORY 123

mous feedback on a number of personality-related questionnaires. strongest loading on the intended component, and all of these To balance gender effects while constructing the final BFI-2 primary loadings were at least .41 in strength (M ϭ .60). scales, our final sample of 1,000 participants was randomly se- These preliminary results suggest that our joint rational- lected from a larger pool of respondents to include 500 men and empirical approach to developing the BFI-2 yielded a reliable 500 women. Members of the final sample ranged in age from 18 measure with a clear Big Five structure. However, these results to 77 years old (M ϭ 29.25, SD ϭ 12.17), with most (64%) under may be favorably biased by inadvertent capitalization on chance, the age of 30. They were diverse in terms of ethnicity: 65% in that they are computed from the same scale development sample described themselves as White/Caucasian, 7% as Hispanic/Latino, used to refine the preliminary BFI-2 item pool into the final 7% as Black/African American, 6% as Asian/Asian American, 1% measure. We therefore refrain from reporting additional analyses as Native American/American Indian, 4% as another ethnicity, and of this sample. Instead, we evaluate the BFI-2 more thoroughly 5% as mixed ethnicity, with 5% not reporting ethnicity. Most using data from independent validation samples. participants (79%) were residents of the United States, with smaller numbers residing in the United Kingdom (9%), Canada Study 3 (7%), and Australia or New Zealand (5%). Measure. All participants described themselves using the Study 3 was conducted to examine the BFI-2’s basic measure- complete pool of 110 candidate BFI-2 items developed in Study 1. ment properties, multidimensional structure, and nomological net- They rated these items using a 5-point scale ranging from disagree work, using two independent samples: an Internet sample and a strongly to agree strongly. As a preliminary data check, we com- student sample. Consistent with our goals for developing the puted alpha reliabilities for the original BFI domain scales in the BFI-2, we were particularly interested in examining (a) basic present sample. Alphas were .87 for Extraversion, .82 for Agree- measurement properties, including internal consistency, retest re- ableness, .84 for Conscientiousness, .86 for Negative Emotional- liability, and self-peer agreement, (b) multidimensional structure ity, and .82 for Open-Mindedness. These are essentially identical across levels of analysis (facets within domains, items within to the corresponding values from the ESCS data analyzed in Study domains, and items within facets), (c) the influence of acquies- 1, and very similar to previously published results from other cence on item responses, (d) convergence with other Big Five noninternet samples (John et al., 2008). measures, and (e) substantive relations with and capacity to predict self-reported and peer-reported criteria.

Results and Discussion Method As discussed above, our major goals in developing the BFI-2 Participants and procedure. were to retain the focus, clarity, and brevity of the original BFI, to Internet validation sample. These participants were 1,000 develop a robust hierarchical structure, to balance bandwidth and adult visitors to personalitylab.org (500 men and 500 women) who fidelity, and to minimize the influence of acquiescence. Our ratio- rated themselves using the original BFI and the BFI-2. The pro- nal and empirical criteria for constructing the final BFI-2 scales cedures used to recruit, select, and assess these participants were reflected these goals. To ensure brevity, we limited the BFI-2 to identical to those used in Study 2, but the scale development and four items per facet. To promote focus and clarity, we rationally Internet validation samples did not overlap with each other. Par- evaluated item content and readability. To promote a robust hier- ticipants in the Internet validation sample ranged in age from 18 to archical structure, we examined the BFI-2’s multidimensional 74 years old (M ϭ 28.73, SD ϭ 11.68), with most (65%) under the structure at the domain and facet levels. To balance bandwidth and age of 30. Regarding ethnicity, 66% described themselves as fidelity, we considered the items’ convergent and discriminant White/Caucasian, 7% as Asian/Asian American, 7% as Hispanic/ correlations with preliminary domain and facet scales, as well as Latino, 6% as Black/African American, 1% as Native American/ rational judgments of item redundancy. Finally, to minimize the American Indian, 4% as another ethnicity, and 5% as mixed influence of acquiescence, we included an equal number of true- ethnicity, with 5% not reporting ethnicity. Most participants (82%) keyed and false-keyed items on each scale. We used these criteria were residents of the United States, with smaller numbers residing to select a final set of 60 items for the BFI-2, with 15 4-item facet in the United Kingdom (9%), Canada (7%), and Australia or New This document is copyrighted by the American Psychological Association or one of its allied publishers. scales that aggregate into five 12-item domain scales. The BFI-2 Zealand (3%). This article is intended solely for the personal use of the individual user and is not to be disseminated broadly. self-report form, as well as scoring keys for the domain and facet Student validation sample. These participants were 470 stu- scales, are presented in the Appendix. dents (146 men, 313 women, and 11 who did not report gender) We next examined the BFI-2’s basic measurement properties enrolled in psychology courses at a large, public university who and domain-level structure in the scale development sample. Alpha completed the BFI and BFI-2. They ranged in age from 16 to 49 reliabilities for the 12-item domain scales were .87 for Extraver- years old (M ϭ 21.68, SD ϭ 3.26), with most (90%) under the age sion, .83 for Agreeableness, .88 for Conscientiousness, .91 for of 25. Regarding ethnicity, 49% described themselves as Asian/ Negative Emotionality, and .84 for Open-Mindedness. Alphas for Asian American, 27% as White/Caucasian, 12% as Hispanic/ the 4-item facet scales ranged from .65 to .84, with a mean of .76. Latino, 1% as Black/African American, and 8% as another ethnic- In a principal components analysis (PCA) of the 15 BFI-2 facets, ity, with 4% not reporting ethnicity. Each participant completed a when we extracted and varimax rotated five components, all 15 series of questionnaires at a course website in exchange for partial facets had their strongest loading on the intended component, and course credit. all of these primary loadings were at least .73 in strength (M ϭ Measures. All participants described themselves using the .80). In a similar PCA of the BFI-2 items, all 60 items had their combined BFI and BFI-2 item set, allowing us to score both

124 SOTO AND JOHN

measures. In the Internet validation sample, alpha reliabilities for Behavioral self-reports. Approximately two weeks after com- the original BFI domain scales were .88 for Extraversion, .79 for pleting the BFI and BFI-2, 439 student participants described their Agreeableness, .85 for Conscientiousness, .85 for Negative Emo- behavior during the previous six months using a set of 80 items tionality, and .81 for Open-Mindedness, and alphas for the post (Bardi & Schwartz, 2003). Each item was rated on a 5-point hoc BFI facet scales ranged from .54 to .82 with a mean of .69. In frequency scale ranging from never to all the time. After within- the student validation sample, alphas for the BFI domain scales person centering each participant’s set of ratings to control for were .88 for Extraversion, .80 for Agreeableness, .81 for Consci- acquiescence (Bardi & Schwartz, 2003), the items were aggregated entiousness, .84 for Negative Emotionality, and .80 for Open- into 10 scales corresponding with values from the Schwartz values Mindedness, and alphas for the post hoc facet scales ranged from circumplex: conformity (e.g., “Obey rules and regulations”), tra- .54 to .83 with a mean of .69. These results are similar to previ- dition (e.g., “Attend religious/spiritual services on important ously published values (e.g., John et al., 2008; Soto & John, dates”), benevolence (e.g., “Lend things to people I know”), power 2009a). To examine the BFI-2’s reliability and nomological net- (e.g., “Manipulate others to get what I want”), universalism (e.g., work, participants in the student validation sample were also “Sign petitions to support environmental protection efforts”), he- assessed using a number of additional measures, described below. donism (e.g., “Indulge myself by buying things that I don’t really Big Five Mini-Markers. Within one week of completing the need”), security (e.g., “Go out of my way not to catch colds, the BFI and BFI-2, 438 student participants completed four additional flu, etc. from others”), stimulation (e.g., “Look for stimulating measures of the Big Five: the Big Five Mini-Markers, the Big Five activities that break up my routine”), achievement (e.g., “Study Aspect Scales, the NEO Personality Inventory—Revised, and the hard in order to get the highest grade in class”), and self-direction NEO Five-Factor Inventory. Completed during the same session as (e.g., “Read about intellectual topics that are not directly related to the BFI and BFI-2, the Mini-Markers (Saucier, 1994) are a 40-item my classes or professional goals”). As in previous research, and short form of Goldberg’s (1992) unipolar Big Five marker adjec- reflecting each value’s broad range of conceptually relevant be- tives. The items are trait-descriptive adjectives that respondents haviors, alpha reliabilities varied considerably across the scales, rate on a 9-point scale ranging from extremely inaccurate to from .27 to .70 (cf. Bardi & Schwartz, 2003; Pozzebon & Ashton, extremely accurate as a description of the respondent. In this 2009). While certainly noting the low internal consistency of some sample, alpha reliabilities for the Mini-Marker scales were .87 for scales, we retained their original scoring so that they could serve Extraversion, .84 for Agreeableness, .84 for Conscientiousness, as an unbiased, a priori set of criteria for examining the BFI-2’s .84 for Negative Emotionality, and .82 for Open-Mindedness. nomological network. Big Five Aspect Scales. Also completed during the same Psychological Well-Being Scales. Approximately two weeks session as the BFI and BFI-2, the Big Five Aspect Scales (BFAS; before completing the BFI and BFI-2, 179 student participants DeYoung et al., 2007) are a hierarchical, 100-item measure devel- completed the Psychological Well-Being Scales (Ryff, 1989). This oped from the IPIP. The BFAS items are descriptive phrases that measure includes 84 items that respondents rate on a 5-point scale respondents rate on a 5-point scale ranging from strongly disagree ranging from disagree strongly to agree strongly. The items are to strongly agree. The BFAS uses 10-item scales to assess two aggregated into 14-item scales assessing six aspects of psycholog- aspect traits within each Big Five domain. Each Big Five domain ical well-being: positive relations with others (e.g., “I feel like I get is then scored by aggregating its two aspects. In this sample, alpha reliabilities for the BFAS domains were .89 for Extraversion, .87 a lot out of my friendships”), purpose in life (e.g., “I have a sense for Agreeableness, .85 for Conscientiousness, .91 for Negative of direction and purpose in life”), environmental mastery (e.g., “I Emotionality, and .84 for Open-Mindedness. Alphas for the 10 am quite good at managing the many responsibilities of my daily aspect scales ranged from .76 to .90, with a mean of .84. life”), self-acceptance (e.g., “For the most part, I am proud of who NEO Personality Inventory—Revised and NEO Five-Factor I am and the life I lead”), autonomy (e.g., “My decisions are not Inventory. Completed approximately one week after the BFI and usually influenced by what everyone else is doing”), and personal BFI-2, the NEO Personality Inventory—Revised (NEO PI-R; Mc- growth (e.g., “I have the sense that I have developed a lot as a Crae & Costa, 2010) is a 240-item, hierarchical Big Five measure. person over time”). In this sample, the scales’ alpha reliabilities Its items are statements that respondents rate on a 5-point scale ranged from .85 to .92. ranging from strongly disagree to strongly agree. The NEO PI-R Retest assessment and peer-reports. Approximately eight This document is copyrighted by the American Psychological Association or one of its allied publishers. uses 8-item scales to assess six facet traits within each Big Five weeks after completing the BFI and BFI-2, a subsample of 110 This article is intended solely for the personal use of the individual user and is not to be disseminated broadly. domain, then uses factor scoring equations to score the five super- student participants completed the BFI-2 a second time, and a ordinate domains from the 30 facets. In this sample, alpha reli- separate subsample of 184 student participants were described by abilities for the NEO PI-R domains were .90 for Extraversion, .89 a knowledgeable peer. Most peers were friends (60%) or romantic for Agreeableness, .92 for Conscientiousness, .93 for Negative partners (30%). Each peer rated the target participant using the Emotionality, and .89 for Open-Mindedness. Alphas for the 30 BFI-2, as well as items assessing four criteria: social connected- facet scales ranged from .57 to .84, with a mean of .74. ness (4 items, e.g., “Has close relationships with others”), likability We also scored the five domain scales of the NEO Five-Factor (2 items, e.g., “Is the kind of person almost everyone likes”), stress Inventory (NEO-FFI; McCrae & Costa, 2010) from a subset of 60 resistance (5 items, e.g., “Is able to put emotionally difficult events NEO PI-R items. The NEO-FFI is a short form of the NEO PI-R into proper perspective”), and positive affect (2 items, e.g., “Is that assesses each Big Five domain using a 12-item scale. In this joyful, happy, pleased”; English, John, Srivastava, & Gross, 2012). sample, alphas for the NEO-FFI domain scales were .81 for Alpha reliabilities for the peer-reported criteria were .76 for social Extraversion, .78 for Agreeableness, .85 for Conscientiousness, connectedness, .75 for likability, .78 for stress resistance, and .67 .87 for Negative Emotionality, and .73 for Open-Mindedness. for positive affect.

BFI-2: THE NEXT BIG FIVE INVENTORY 125

Results and Discussion corresponding self-reported facet. These findings indicate that the BFI-2 shows strong self-peer agreement and discrimination Reliability, self-peer agreement, and descriptive statistics. at both the domain and facet levels. Our first objective for Study 3 was to examine the BFI-2’s basic Table 5 presents descriptive statistics for the BFI-2 domain measurement properties in the Internet and student validation and facet scales, as well as the mean-level gender differences samples. We expected the BFI-2 to demonstrate strong internal within each sample and mean-level differences between the two consistency, retest reliability, between-domain discrimination, and samples. Converging with previous research using other mea- self-peer agreement. Tables 2 and 3 present reliability coefficients sures (e.g., Costa, Terracciano, & McCrae, 2001), women and interscale correlations for the BFI-2 domain scales and facet tended to describe themselves as somewhat more extraverted, scales, respectively. As shown in Table 2, the five domain scales agreeable, conscientious, and emotional than men. However, all had alpha reliabilities of at least .83 in the Internet validation some facet traits showed distinctive gender differences. For sample and .85 in the student sample, as well as retest reliabilities example, within the Extraversion domain, women tended to of at least .76 in the student sample. As shown in Table 3, alpha report greater Sociability and Energy Level—but not greater reliabilities for the 15 facet scales ranged from .66 to .85 in each Assertiveness—than men. Within the Open-Mindedness do- sample, averaging .76 in the Internet sample and .77 in the student main, women tended to report greater Aesthetic Sensitivity, sample; these scales’ retest reliabilities in the student sample whereas men tended to report greater Creative Imagination and ranged from .66 to .83, averaging .73. These results indicate high reliability for the BFI-2 domain scales, as well as adequate to high Intellectual Curiosity. As for comparisons between the two reliability for the 4-item facet scales. samples, members of the Internet sample reported somewhat Tables 2 and 3 also present interscale correlations among the higher levels of Open-Mindedness and Negative Emotionality BFI-2 domain and facet scales, respectively. Absolute correlations (especially Depression and Emotional Volatility), as well as between the domain scales averaged only .20 in the Internet somewhat lower levels of Organization, than did members of validation sample and .24 in the student validation sample. As for the student sample. This pattern seems consistent with intu- the facet scales, within-domain correlations (e.g., between Socia- itions about individuals who might be especially likely to seek bility and Assertiveness) averaged .55 in the student validation out personality feedback online. sample and .53 in the Internet validation sample, whereas absolute Multidimensional structure and influence of acquiescence. between-domain correlations (e.g., between Sociability and Intel- Domain-level structure. Our second and third objectives for lectual Curiosity) averaged only .16 in the Internet validation Study 3 were to examine (a) the BFI-2’s multidimensional sample and .19 in the student validation sample. These results structure at the domain and facet levels, and (b) the influence of indicate strong discrimination between the BFI-2 domains, as well individual differences in acquiescence on this structure. At the as an appropriately moderate degree of discrimination among the domain level, we expected that there would be some influence facets within each domain. of acquiescent responding, but that the BFI-2 would still show Self-peer agreement correlations for the BFI-2 domain and a robust Big Five structure. As an initial test for acquiescence facet scales in the student validation sample are presented in effects, we compared results from PCAs of the 60 raw BFI-2 Table 4. At the domain level, self-peer agreement correlations items with results from PCAs of the same 60 items after ranged from .42 to .69, and averaged .56; in contrast, absolute within-person centering to control for acquiescence (i.e., after discriminant correlations averaged only .11. At the facet level, computing each participant’s mean response across the full set agreement correlations ranged from .27 to .73, and averaged of 60 items and then subtracting this within-person mean from .49; in contrast, within-domain discriminant correlations aver- each of their individual item responses). Figure 1 presents the aged only .32, and absolute between-domain discriminant cor- eigenvalues of the unrotated components from each analysis. relations averaged only .10. Moreover, 13 of the 15 self- Reflecting the expected influence of acquiescence, Figures 1a reported facets had their strongest correlation with the and 1c show that, in both samples, PCAs of the raw items corresponding peer-reported facet; conversely, 14 of the 15 indicated six components above the scree line: the Big Five plus peer-reported facets had their strongest correlation with the an additional acquiescence component (cf. Rammstedt & This document is copyrighted by the American Psychological Association or one of its allied publishers.

This article is intended solely for the personal use ofTable the individual user and is not to be disseminated2 broadly. Reliability Coefficients and Intercorrelations of the BFI-2 Domains (Study 3)

Reliability Intercorrelations Domain Alpha Retest Extraversion Agreeableness Conscientiousness Negative Emotionality

Extraversion .88/.88 .84 Agreeableness .83/.85 .76 .14/.09 Conscientiousness .88/.86 .83 .22/.27 .28/.28 Negative Emotionality .90/.90 .81 Ϫ.34/Ϫ.36 Ϫ.29/Ϫ.31 Ϫ.30/Ϫ.34 Open-Mindedness .84/.85 .76 .20/.21 .15/.26 Ϫ.02/.14 Ϫ.06/Ϫ.10 Mean .87/.87 .80 Note. Values left of each forward slash are for the Internet validation sample (N ϭ 1,000); values right of each forward slash are for the student validation sample (N ϭ 470). Retest ϭ Eight-week retest reliability in the student validation sample (N ϭ 110). Absolute correlations of .07 or stronger in the Internet sample, or .10 or stronger in the student sample, are significant at p Ͻ .05.

126 SOTO AND JOHN

ϭ Farmer, 2013; Soto et al., 2008). However, as shown in Figures

— 1b and 1d, within-person centering to control for acquiescence effectively eliminated the additional component. Open- Eight-week To test whether the BFI-2’s intended domain-level structure Mindedness Trust; Org. ϭ .48/.48 .44/.44 .49/.44 would emerge despite the influence of acquiescence, we next ϭ extracted and varimax rotated five principal components from Aesthetic Sensitivity.

— the raw items and centered items in each sample; loadings from ϭ analyses of the centered items are presented in Table 6. Each 470). Retest Ϫ .12/ .13 Ϫ .02/ .09 — ϭ .05. analysis produced a clear Big Five structure, with each item

Ͻ loading most strongly on its intended domain component in both p — samples. For the raw items, these primary loadings were all .37 or Respectfulness; Tru. Ϫ .21/ .16 Ϫ .01/ .12 stronger (M ϭ .61) in the Internet validation sample, and .41 or ϭ stronger (M ϭ .60) in the student validation sample. For the centered items, the primary loadings were all .39 or stronger (M ϭ .64/.56 .65/.58 .59/.60 .62) in the Internet sample, and .45 or stronger (M ϭ .61) in the Ϫ .13/ .23

Intellectual Curiosity; Aes. student sample. By comparison, for both the raw and centered

ϭ items the absolute secondary loadings averaged only .10 in the — Compassion; Res. Internet sample and .12 in the student sample. Moreover, Congru- ϭ Ϫ .31/ .39 Ϫ .16/ .12 — Ϫ .31/ .30 Ϫ .04/.21Ϫ .05/.06 .03/ Ϫ .07 .02/.04 .03/.02 .02/.05 ence coefficients comparing pairs of corresponding components between the two samples were all .97 or greater, indicating near- perfect replication. — To further examine the BFI-2’s domain-level structure, we Ϫ .36/ .42 Ϫ .16/ .14 Ϫ .27/ .33 Ϫ .01/ .01 conducted a PCA of the 15 facet scales (scored from the raw item responses) in each sample. In both samples, the pattern of Emotional Volatility; Int.

Energy Level; Com. eigenvalues indicated only five components above the scree .52/.50 .60/.58 .60/.52 ϭ ϭ Ϫ .21/ .23 Ϫ .05/ .05 Ϫ .17/ .20 Ϫ .10/.10Ϫ .02/.02 .01/.18 .14/.14 .05/.18 Ϫ .07/.02 line. For example, in the Internet validation sample the first five eigenvalues were 4.05, 2.16, 1.90, 1.60, and 1.32, followed by 0.56, 0.49, 0.48, 0.44, and 0.41. This result indicates that the — content-balanced facet scales effectively control for acquies- Ϫ .34/ .36 Ϫ .31/ .30 Ϫ .32/ .31 cence, and therefore do not produce an additional acquiescence

Depression; Emo. component beyond the Big Five. Assertiveness; Ene.

ϭ We next extracted and varimax rotated five components from — ϭ Ϫ .18/ .18 Ϫ .16/ .09 Ϫ .30/ .34 the facet scales in each sample. The loadings from these anal- 1,000); values right of each forward slash are for the student validation sample ( N

ϭ yses, presented in Table 7, reveal three noteworthy findings. First, each facet loaded strongly on its intended Big Five .58/.51 .48/.53 .50/.50 component; these 15 primary loadings were all at least .73 (M ϭ Anxiety; Dep. Ϫ .14/ .20 Ϫ .02/.00 Ϫ .08/ .12 .81) in the Internet validation sample, and at least .67 (M ϭ .79) ϭ Sociability; Ass. in the student validation sample. Second, several facets had ϭ

— conceptually meaningful patterns of secondary loadings. For Ϫ .47/ .52 Ϫ .23/ .21 Ϫ .15/ .19 example, Depression loaded negatively on Extraversion, capturing the association of sadness with lack of energy and social

110). Soc. confidence. Similarly, the negative loading of Trust on Nega- — ϭ tive Emotionality reflects the association of holding negative Ϫ .39/ .35 Ϫ .21/ .21 Ϫ .14/ .19 .15/.07 Ϫ .01/.03 .28/.25 Ϫ .12/ .17 Responsibility; Anx. beliefs about others with experiencing unpleasant emotions in This document is copyrighted by the American Psychological Association or one of its allied publishers. ϭ social situations. Third, the overall pattern of facet loadings This article is intended solely for the personal use of the individual user and is not to be disseminated broadly. replicated very clearly between the Internet and student sam- .54/.59 .59/.63 .48/.44 Ϫ .39/ .36 Ϫ .02/ .03 .11/.06 .11/.05 .14/.28 .09/.18 .09/.09 Ϫ .20/ .22 Ϫ .05/ .16 Ϫ .01/ .01 .16/.15 .13/.15 .09/.17 .20/.23 .06/.06 — Ϫ .06/ .11 ples; Congruence coefficients comparing pairs of corresponding components were all .98 or greater. Facet-level structure. We expected the BFI-2 to show a robust multidimensional structure not only at the domain level, but also at

Reliability Extraversion Agreeableness Conscientiousnessthe facet level Negative Emotionality within each domain. To test this hypothesis, and to Productiveness; Resy. Alpha Retest Soc. Ass. Ene. Com. Res. Tru. Org. Pro. Resy. Anx. Dep. Emo. Int. Aes. .76/.77 .73 .78/.79 .79 .85/.85 .83 — .70/.74 .75 .16/.15 .84/.84 .70 further investigate the influence of acquiescence, we fit a series of ϭ five confirmatory factor analysis (CFA) models to the raw items within each Big Five domain in each sample. Fit statistics for these

Volatility models are presented in Table 8. The initial, single domain model Values left of each forward slash are for the Internet validation sample ( N Facet simply allowed all 12 items within a domain to load on a single factor. As expected, this model fit poorly for each domain in both Emotional Depression .84/.83 .74 Mean Intellectual CuriosityAesthetic .67/.73 SensitivityCreative .76/.83 Imagination .78 .75/.78 .67 .67 .00/.10 .18/.22 .18/.29 .33/.26 .10/.20 .29/.24 .12/.27 .16/.17 .04/.16 .08/.17 .04/.11 .12/.12 ResponsibilityAnxiety .74/.66 .68 .04/.06 .17/.26 .20/.25 .30/.32 .37/.32 .20/.22 retest reliability in the student validation sample ( N AssertivenessEnergy LevelCompassionRespectfulness .78/.78 .76/.72 .80 .66/.72 .71/.72 .74 .68 .66 .12/.08 .03/.03 .29/.28 — Sociability Trust OrganizationProductiveness .85/.84 .78/.73 .76 .74 .14/.22 .31/.36 .35/.37 .22/.18 .26/.16 .15/.14 Table 3 Reliability Coefficients and Intercorrelations of the BFI-2 Facets (Study 3) Note. Organization; Pro. Within-domain correlations are bolded. Absolute correlations ofsamples .07 or stronger in the Internet sample, or .10 or stronger in (CFIs the student sample, are significant at Յ .805 in the Internet validation sample and .800 in

BFI-2: THE NEXT BIG FIVE INVENTORY 127

Table 4 Self–Peer Agreement Correlations for the BFI-2 Domains and Facets (Study 3)

Peer-reported domains Peer-reported facets Report Ext. Agr. Con. Neg. Ope. Soc. Ass. Ene. Com. Res. Tru. Org. Pro. Resy. Anx. Dep. Emo. Int. Aes. Cre.

Self-reported domains Extraversion .69 .01 .04 Ϫ.28 Ϫ.05 .69 .55 .44 .09 Ϫ.18 .11 Ϫ.05 .16 .00 Ϫ.27 Ϫ.37 Ϫ.10 .02 Ϫ.17 .04 Agreeableness .05 .51 .17 Ϫ.13 .18 .09 Ϫ.16 .18 .43 .40 .44 .05 .18 .19 Ϫ.06 Ϫ.13 Ϫ.14 .17 .13 .12 Conscientiousness .14 .13 .53 Ϫ.15 .12 .04 .16 .17 .13 .07 .13 .46 .45 .33 Ϫ.03 Ϫ.21 Ϫ.15 .12 .10 .06 Negative Emotionality Ϫ.21 Ϫ.17 Ϫ.11 .63 .05 Ϫ.19 Ϫ.10 Ϫ.21 .00 Ϫ.07 Ϫ.31 Ϫ.05 Ϫ.18 Ϫ.03 .55 .54 .55 .01 .14 Ϫ.05 Open-Mindedness .04 .07 .10 .03 .42 .05 .01 .02 .11 .05 .03 .01 .16 .09 .05 .03 .00 .33 .35 .32 Self-reported facets Sociability .65 .02 Ϫ.03 Ϫ.23 Ϫ.10 .73 .46 .40 .07 Ϫ.15 .11 Ϫ.09 .08 Ϫ.06 Ϫ.26 Ϫ.30 Ϫ.06 .03 Ϫ.23 Ϫ.02 Assertiveness .51 Ϫ.08 .03 Ϫ.19 Ϫ.08 .47 .56 .23 Ϫ.01 Ϫ.22 .03 Ϫ.06 .14 .01 Ϫ.19 Ϫ.24 Ϫ.07 Ϫ.04 Ϫ.13 Ϫ.02 Energy Level .56 .11 .13 Ϫ.29 .06 .52 .36 .50 .18 Ϫ.06 .14 .04 .20 .06 Ϫ.24 Ϫ.41 Ϫ.13 .06 Ϫ.06 .17 Compassion .04 .37 .14 .02 .21 .07 Ϫ.10 .13 .41 .26 .26 .01 .16 .18 .04 .01 .00 .16 .17 .18 Respectfulness Ϫ.10 .42 .15 Ϫ.13 .10 Ϫ.10 Ϫ.21 .07 .30 .41 .32 .05 .15 .16 Ϫ.02 Ϫ.10 Ϫ.19 .15 .05 .03 Trust .16 .49 .13 Ϫ.21 .13 .23 Ϫ.09 .24 .36 .34 .50 .06 .13 .13 Ϫ.17 Ϫ.22 Ϫ.16 .11 .10 .09 Organization .05 .12 .48 Ϫ.14 .06 Ϫ.02 .07 .08 .11 .09 .11 .56 .26 .27 Ϫ.04 Ϫ.19 Ϫ.13 .05 .07 .02 Productiveness .22 .06 .41 Ϫ.16 .09 .11 .22 .24 .06 .02 .07 .25 .51 .22 Ϫ.07 Ϫ.19 Ϫ.15 .14 .04 .04 Responsibility .07 .14 .39 Ϫ.06 .17 .00 .10 .10 .16 .06 .13 .26 .35 .32 .06 Ϫ.13 Ϫ.08 .13 .15 .11 Anxiety Ϫ.16 Ϫ.08 .04 .56 .08 Ϫ.19 Ϫ.04 Ϫ.16 .09 .01 Ϫ.26 .05 Ϫ.04 .09 .57 .42 .47 .06 .15 Ϫ.04 Depression Ϫ.29 Ϫ.09 Ϫ.13 .46 .07 Ϫ.29 Ϫ.19 Ϫ.23 .00 .03 Ϫ.22 Ϫ.06 Ϫ.18 Ϫ.08 .39 .49 .33 .03 .15 Ϫ.02 Emotional Volatility Ϫ.08 Ϫ.24 Ϫ.17 .56 Ϫ.01 Ϫ.02 Ϫ.03 Ϫ.15 Ϫ.09 Ϫ.19 Ϫ.30 Ϫ.10 Ϫ.22 Ϫ.08 .44 .45 .57 Ϫ.05 .07 Ϫ.06 Intellectual Curiosity .07 .10 .14 .08 .46 .06 .05 .07 .13 .07 .05 .02 .19 .13 .12 .07 .03 .49 .26 .35 Aesthetic Sensitivity Ϫ.09 .09 .13 .03 .32 Ϫ.06 Ϫ.06 Ϫ.10 .10 .10 .02 .09 .12 .11 .05 .06 Ϫ.03 .16 .42 .17 Creative Imagination .13 Ϫ.01 Ϫ.02 Ϫ.03 .23 .15 .05 .11 .02 Ϫ.06 .00 Ϫ.10 .07 Ϫ.01 Ϫ.05 Ϫ.05 .01 .17 .10 .27 Note. N ϭ 184. Absolute correlations of .15 or stronger are significant at p Ͻ .05. Ext. ϭ Extraversion; Agr. ϭ Agreeableness; Con. ϭ Conscientiousness; Neg. ϭ Negative Emotionality; Ope. ϭ Open-Mindedness; Soc. ϭ Sociability; Ass. ϭ Assertiveness; Ene. ϭ Energy Level; Com ϭ Compassion; Res. ϭ Respectfulness; Tru. ϭ Trust; Org. ϭ Organization; Pro. ϭ Productiveness; Resy. ϭ Responsibility; Anx. ϭ Anxiety; Dep. ϭ Depression; Emo. ϭ Emotional Volatility; Int. ϭ Intellectual Curiosity; Aes. ϭ Aesthetic Sensitivity; Cre. ϭ Creative Imagination. Self-peer agreement correlations are bolded.

the student validation sample).1 This finding suggests the presence The fourth, three facets model included three factors represent- of multiple dimensions within each domain, and provides a base- ing the three BFI-2 facet scales within a Big Five domain. Each line for evaluating more-complex models. item was only allowed to load on a single facet factor, and the three Each of the next two models allowed for individual differences in facet factors were allowed to intercorrelate. Compared with the acquiescence. Specifically, the bifactor single domain plus acquies- single domain model, the three facets model provided a substantial cence model allowed each item within a Big Five domain to load on improvement in fit for each domain in both samples (⌬CFIs Ն both the substantive domain factor and an acquiescence method .050 in the Internet sample and .076 in the student sample). factor. All loadings on the acquiescence factor were constrained to Moreover, this model provided acceptable or nearly acceptable equal 1 (thereby forcing true-keyed and false-keyed items to load in overall fit for Extraversion, Conscientiousness, Negative Emotion- the same direction), and the acquiescence factor was not allowed to ality, and Open-Mindedness in both samples (CFIs Ն .902 in the correlate with the domain factor; these constraints ensured that the Internet sample and .895 in the student sample). acquiescence factor would represent individual differences in re- The final, three facets plus acquiescence model (illustrated in sponse style that were distinct from meaningful personality content Figure 2) added an acquiescence factor to the three facets model (cf. Billiet & McClendon, 2000; John et al., 2008). The positive and just described. Thus, each item was allowed to load on both its negative items model included two correlated factors: one defined by facet factor and an acquiescence method factor. All loadings on the the domain’s true-keyed items, and one defined by its false-keyed This document is copyrighted by the American Psychological Association or one of its allied publishers. acquiescence factor were constrained to equal 1, and this factor items. As expected, fit statistics for the single domain plus acquies- This article is intended solely for the personal use of the individual user and is not to be disseminated broadly. was not allowed to correlate with any of the facet factors. Com- cence and positive and negative items models were essentially equiv- pared with the single domain model, this final model provided a alent to each other. Compared with the baseline single domain model, large improvement in fit for each Big Five domain in both samples they provided a substantial improvement in fit for Agreeableness ⌬ Ն (⌬CFIs Ն .070 in the Internet sample and .047 in the student sample), ( CFIs .145 in the Internet sample and .149 in the student and more modest improvements for the other four domains (⌬CFIs Յ sample). Moreover, it provided acceptable overall fit for each Ն .024 in the Internet sample and .021 student sample). These results domain in both samples (CFIs .930 in the Internet sample and indicate that divergence between the high and low pole of each .932 in the student sample). domain can be explained by individual differences in acquiescence, Conclusions. Taken together, these results support three key and that acquiescence has a particularly strong influence on responses conclusions. First, the BFI-2 has a robust hierarchical structure, to Agreeableness items. However, neither model provided acceptable Յ fit for any domain (CFIs .876 in the Internet sample and .850 in the 1 In our description of results, we focus on the comparative fit index student sample), suggesting the presence of additional dimensions (CFI) to summarize model fit. However, all of the fit statistics presented in within each domain. Table 8 support similar conclusions.

128 SOTO AND JOHN

Table 5 Descriptive Statistics for the BFI-2 Domains and Facets (Study 3)

Internet sample Student sample Men Women Combined Gender Men Women Combined Gender Domain or facet M (SD) M (SD) M (SD) d M (SD) M (SD) M (SD) d Sample d

Extraversion 3.15 (.78) 3.31 (.80) 3.23 (.80) .21 3.20 (.70) 3.31 (.73) 3.25 (.71) .15 Ϫ.03 Sociability 2.80 (1.02) 3.10 (1.07) 2.95 (1.05) .29 2.94 (.86) 3.06 (1.01) 3.00 (.94) .12 Ϫ.05 Assertiveness 3.28 (.92) 3.28 (.93) 3.28 (.93) .01 3.27 (.82) 3.28 (.85) 3.28 (.84) .02 .01 Energy Level 3.37 (.88) 3.56 (.89) 3.47 (.89) .22 3.40 (.80) 3.58 (.72) 3.49 (.77) .24 Ϫ.03 Agreeableness 3.57 (.65) 3.79 (.60) 3.68 (.64) .35 3.51 (.63) 3.82 (.56) 3.66 (.62) .53 .03 Compassion 3.72 (.79) 3.97 (.76) 3.84 (.78) .33 3.60 (.81) 3.98 (.69) 3.79 (.78) .49 .07 Respectfulness 3.87 (.73) 4.08 (.68) 3.98 (.71) .30 3.76 (.68) 4.05 (.64) 3.91 (.68) .44 .10 Trust 3.13 (.83) 3.32 (.80) 3.23 (.82) .24 3.15 (.77) 3.43 (.77) 3.29 (.78) .36 Ϫ.08 Conscientiousness 3.35 (.74) 3.50 (.79) 3.43 (.77) .20 3.34 (.60) 3.54 (.66) 3.44 (.64) .31 Ϫ.03 Organization 3.33 (.99) 3.51 (1.03) 3.42 (1.01) .19 3.46 (.88) 3.68 (.87) 3.57 (.88) .26 Ϫ.16 Productiveness 3.31 (.87) 3.43 (.93) 3.37 (.90) .13 3.24 (.75) 3.39 (.80) 3.32 (.78) .19 .07 Responsibility 3.40 (.78) 3.57 (.83) 3.48 (.81) .20 3.33 (.60) 3.55 (.71) 3.44 (.66) .33 .05 Negative Emotionality 2.95 (.88) 3.18 (.84) 3.07 (.87) .27 2.84 (.74) 2.95 (.79) 2.89 (.76) .14 .21 Anxiety 3.28 (.95) 3.58 (.88) 3.43 (.93) .33 3.20 (.78) 3.53 (.85) 3.37 (.83) .40 .07 Depression 2.82 (1.03) 2.88 (1.02) 2.85 (1.02) .06 2.65 (.92) 2.53 (.93) 2.59 (.93) Ϫ.14 .26 Emotional Volatility 2.77 (1.04) 3.09 (1.04) 2.93 (1.05) .31 2.66 (.91) 2.79 (.97) 2.73 (.95) .13 .20 Open-Mindedness 3.93 (.64) 3.91 (.67) 3.92 (.65) Ϫ.02 3.71 (.65) 3.62 (.63) 3.66 (.64) Ϫ.15 .39 Intellectual Curiosity 4.18 (.69) 4.03 (.71) 4.10 (.70) Ϫ.21 3.89 (.76) 3.80 (.70) 3.85 (.73) Ϫ.12 .24 Aesthetic Sensitivity 3.71 (.90) 3.88 (.94) 3.80 (.92) .19 3.57 (.95) 3.58 (.90) 3.58 (.92) .02 .36 Creative Imagination 3.89 (.81) 3.82 (.80) 3.85 (.81) Ϫ.09 3.68 (.75) 3.46 (.77) 3.57 (.77) Ϫ.28 .36 Sample size 500 500 1,000 313 146 459 Note. Gender d ϭ Cohen’s d for the mean-level difference between men and women, with positive values indicating higher scores for women; differences of .13 or larger in the Internet sample, or .20 or larger in the student sample, are significant at p Ͻ .05. Sample d ϭ Cohen’s d for the mean-level difference between the combined-gender Internet and student samples, with positive values indicating higher scores in the Internet sample; differences of .12 or larger are significant at p Ͻ .05. Combined values in the student sample are estimated for a sample with an equal number of men and women.

with three distinguishable facets nested within each Big Five verge more strongly with the BFI-2 than with the original BFI. domain.2 Second, acquiescence somewhat distorts this structure at This gain in convergence was most substantial for the Agreeable- both the domain level (by producing an additional acquiescence ness (M ϭ .75 for the BFI-2 vs. .70 for the BFI) and Open- component and suppressing the items’ primary loadings) and the Mindedness (M ϭ .76 vs. .72) domains. These results indicate that facet level (by biasing the associations between same-domain broadening the Big Five domains’ conceptual definitions from the items; cf. John et al., 2008; McCrae et al., 2001; Rammstedt & BFI to the BFI-2 produced better domain-level convergence with Farmer, 2013; Soto et al., 2008). Third, the influence of acquies- other measures.4 cence on the BFI-2 can be effectively addressed by within-person centering the item responses (thereby controlling acquiescence at the item level), by aggregating the items into their content- balanced domain and facet scales (thereby controlling acquies- 2 This conclusion was also supported by the results of exploratory PCAs. cence at the scale level), or by modeling acquiescence as a method Specifically, when we extracted and promax-rotated three components factor (thereby accounting for the influence of acquiescence on from each Big Five domain’s 12 within-person centered items, 58 of the 60 item responses). total items had their strongest loading on the expected facet component in each sample. Moreover, the two items with unexpected primary loadings Convergence with other Big Five measures. were not consistent across the two samples. Domain-level associations. Our fourth objective for Study 3 3 Researchers interested in switching from the original BFI to the BFI-2 This document is copyrighted by the American Psychological Association or one of its allied publishers. was to examine the BFI-2’s domain-level and facet-level associ- in ongoing longitudinal studies and research programs can obtain, from the This article is intended solely for the personal use of the individual user and is not to be disseminated broadly. ations with other Big Five measures. Table 9 presents domain- first author, regression-derived scoring equations that further increase the comparability of scores on the BFI-2 with the original BFI. However, for level correlations of the BFI-2 with the original BFI, as well as the new studies we recommend using simple item aggregation to score the BFAS, Mini-Markers, NEO-FFI, and NEO PI-R. These correla- BFI-2. tions show that the BFI-2 converged strongly with each of these 4 This conclusion was further supported by the results of IRT analyses. measures. Specifically, the BFI-2’s monotrait-heteromethod con- These analyses indicated that, for each Big Five domain, the original BFI vergent correlations averaged .92 with the original BFI,3 .82 with and the BFI-2 had similarly shaped test information curves but the BFI-2 provided more information. For example, compared with the original BFI, the BFAS, .80 with the Mini-Markers, .75 with the NEO-FFI, and the BFI-2 provided approximately 55% more total information about .72 with the NEO PI-R. These correlations were much stronger Negative Emotionality and 15% more information about Extraversion; for than the absolute heterotrait-heteromethod discriminant correla- both measures, information was distributed symmetrically between low tions (M ϭ .21), as well as the absolute heterotrait-monomethod and high levels of these two domains. Similarly, the BFI-2 provided ϭ approximately 29% more information about Agreeableness, 12% more discriminant correlations reported in Table 2 (M .20 in the information about Open-Mindedness, and 11% more information about Internet sample and .24 in the student sample). Moreover, the Conscientiousness; both measures provided more information at very low BFAS, Mini-Markers, NEO-FFI, and NEO PI-R tended to con- levels than at very high levels of these three domains.

BFI-2: THE NEXT BIG FIVE INVENTORY 129

Figure 1. Eigenvalues from principal components analyses of the raw and centered BFI-2 items in the Internet and student validation samples (Study 3).

Facet-level associations. To examine convergence and dis- Discipline (r ϭ .73), and Achievement-Striving (r ϭ .60). Within crimination at the facet level, we computed each BFI-2 facet Negative Emotionality (Figure 3d), the most distinctive associa- scale’s correlations with the same-domain BFAS aspects and NEO tions were BFI-2 Depression with Withdrawal (r ϭ .77) and NEO PI-R facets. Figure 3 presents each BFI-2 facet’s profile of corre- PI-R Depression (r ϭ .71), BFI-2 Anxiety with NEO PI-R Anxiety lations. This figure shows strong overall convergence: a total of 53 (r ϭ .70), and BFI-2 Emotional Volatility with Volatility (r ϭ .79) correlations were at least .50 in strength. Moreover, each BFI-2 and Angry Hostility (r ϭ .54). Finally, for Open-Mindedness facet showed a distinctive profile of associations with the BFAS (Figure 3e), BFI-2 Aesthetic Sensitivity was most distinctively and NEO PI-R. For example, within the Extraversion domain associated with Openness (r ϭ .76) and Aesthetics (r ϭ .74), (Figure 3a), BFI-2 Assertiveness was much more strongly associ- BFI-2 Intellectual Curiosity with Ideas (r ϭ .72) and Intellect (r ϭ ated with BFAS Assertiveness (r ϭ .85) and NEO PI-R Asser- This document is copyrighted by the American Psychological Association or one of its allied publishers. .62), and BFI-2 Creative Imagination with Fantasy (r ϭ .38), tiveness (r ϭ .79) than were BFI-2 Sociability and Energy Level. This article is intended solely for the personal use of the individual user and is not to be disseminated broadly. especially the Fantasy item “I have a very active imagination” (r ϭ In contrast, BFI-2 Sociability was distinctively associated with .46).5 All of these correlations were highly significant (p Ͻ .001), Gregariousness (r ϭ .62), whereas BFI-2 Energy Level was dis- as were the corresponding partial correlations that controlled for tinctively associated with Enthusiasm (r ϭ .70), Positive Emotions (r ϭ .63), and Activity (r ϭ .59). Within the Agreeableness same-domain BFI-2 facets. These results support the BFI-2 facets’ domain (Figure 3b), BFI-2 Compassion was distinctively associ- conceptual definitions (see Table 1), as well as their convergent ated with Compassion (r ϭ .70), Altruism (r ϭ .67), and Tender- and discriminant validity. Mindedness (r ϭ .50), BFI-2 Trust with Trust (r ϭ .65), and BFI-2 Respectfulness with Politeness (r ϭ .66), Compliance (r ϭ .52), and Straightforwardness (r ϭ .48). Within Conscientiousness (Fig-

ure 3c), the most distinctive associations were BFI-2 Organization 5 ϭ ϭ The moderate degree of convergence between BFI-2 Creative Imagi- with Order (r .74) and Orderliness (r .70), BFI-2 Responsi- nation and NEO PI-R Fantasy reflects Creative Imagination’s greater focus bility with Dutifulness (r ϭ .58) and Deliberation (r ϭ .47), and on creativity and originality, as compared with Fantasy’s greater focus on BFI-2 Productiveness with Industriousness (r ϭ .77), Self- idle daydreaming.

130 SOTO AND JOHN

Table 6 Loadings From a Principal Components Analysis of the 60 Within-Person Centered BFI-2 Items (Study 3)

Negative Open- Item (Original, revised, or new BFI item) Extraversion Agreeableness Conscientiousness Emotionality Mindedness

Extraversion Sociability items Tends to be quiet (Original) ؊.77/؊.78 .03/.06 .10/.09 Ϫ.01/Ϫ.03 .05/Ϫ.01 Is talkative (Original) .74/.79 .11/.06 Ϫ.11/Ϫ.04 Ϫ.02/Ϫ.03 Ϫ.03/.07 Is outgoing, sociable (Original) .76/.73 .24/.14 Ϫ.02/.04 .15/.18 Ϫ.03/.12 Is sometimes shy, introverted (Revised) ؊.71/؊.71 .07/.04 Ϫ.01/.08 Ϫ.16/Ϫ.20 .08/.09 Assertiveness items Is dominant, acts as a leader (New) .63/.65 Ϫ.15/Ϫ.17 .26/.21 .13/.12 .19/.17 Has an assertive personality (Original) .58/.58 Ϫ.27/Ϫ.29 .20/.15 .13/.13 .08/.06 Prefers to have others take charge (New) ؊.54/؊.50 .22/.22 Ϫ.18/Ϫ.23 Ϫ.11/Ϫ.09 Ϫ.23/Ϫ.21 Finds it hard to influence people (New) ؊.50/؊.47 .06/Ϫ.02 Ϫ.14/Ϫ.20 Ϫ.06/Ϫ.09 Ϫ.29/Ϫ.35 Energy Level items Is full of energy (Original) .67/.66 .19/.24 .12/.08 .23/.18 .03/Ϫ.12 Shows a lot of Enthusiasm (Revised) .65/.68 .35/.31 .08/.07 .05/.09 .15/.03 Rarely feels excited or eager (New) ؊.55/؊.45 Ϫ.29/Ϫ.29 .00/Ϫ.14 .05/.17 Ϫ.13/Ϫ.14 Is less active than other people (New) ؊.45/؊.46 Ϫ.06/.01 Ϫ.25/Ϫ.21 Ϫ.16/Ϫ.22 Ϫ.08/Ϫ.18 Agreeableness Compassion items Is compassionate, has a soft heart (New) .07/.03 .71/.67 .06/.15 Ϫ.13/Ϫ.19 .11/.18 Can be cold and uncaring (Revised) Ϫ.16/Ϫ.15 ؊.65/؊.69 Ϫ.13/Ϫ.06 .04/.00 .01/Ϫ.07 Is helpful and unselfish with others (Original) .18/.07 .58/.61 .19/.20 .05/.02 .14/.18 Feels little sympathy for others (New) .01/Ϫ.05 ؊.44/؊.46 Ϫ.03/Ϫ.13 .08/.12 Ϫ.13/Ϫ.23 Respectfulness items Is respectful, treats others with respect (New) Ϫ.02/Ϫ.07 .65/.61 .19/.33 .08/.09 .11/.18 Is polite, courteous to others (New) Ϫ.01/Ϫ.13 .60/.62 .19/.29 .05/.07 .10/.20 Is sometimes rude to others (Original) .10/.23 ؊.65/؊.55 Ϫ.17/Ϫ.09 Ϫ.13/Ϫ.17 Ϫ.01/Ϫ.07 Starts arguments with others (Revised) .26/.34 ؊.50/؊.47 Ϫ.17/Ϫ.06 Ϫ.18/Ϫ.18 .03/Ϫ.01 Trust items Assumes the best about people (New) .10/.15 .60/.63 Ϫ.02/Ϫ.03 .15/.23 .03/.00 Has a forgiving nature (Original) Ϫ.01/.02 .61/.60 .00/Ϫ.07 .24/.22 .05/.07 Tends to find fault with others (Original) Ϫ.04/Ϫ.04 ؊.52/؊.60 Ϫ.03/.05 Ϫ.28/Ϫ.20 Ϫ.04/Ϫ.02 Is suspicious of others’ intentions (New) Ϫ.17/Ϫ.17 ؊.39/؊.51 .05/Ϫ.05 Ϫ.28/Ϫ.28 .06/.12 Conscientiousness Organization items Tends to be disorganized (Original) Ϫ.03/.00 .01/.01 ؊.75/؊.76 Ϫ.03/Ϫ.07 .06/.03 Is systematic, likes to keep things in order (New) Ϫ.08/Ϫ.03 .02/Ϫ.01 .70/.73 .00/Ϫ.05 Ϫ.03/Ϫ.01 Keeps things neat and tidy (New) .01/Ϫ.02 .00/.07 .73/.69 .00/.01 Ϫ.11/Ϫ.03 Leaves a mess, doesn’t clean up (New) Ϫ.03/.08 Ϫ.01/Ϫ.1 ؊.69/؊.62 Ϫ.04/Ϫ.02 .07/Ϫ.05 Productiveness items Is efficient, gets things done (Revised) .16/.25 .09/.01 .68/.60 .13/.15 .06/.11 Is persistent, works until the task is finished (Revised) .08/.11 .13/.07 .66/.60 .13/.12 .06/.11 Tends to be lazy (Original) Ϫ.23/Ϫ.34 Ϫ.10/Ϫ.10 ؊.67/؊.55 Ϫ.07/Ϫ.09 Ϫ.05/Ϫ.06 Has difficulty getting started on tasks (New) Ϫ.17/Ϫ.13 Ϫ.03/.02 ؊.60/؊.54 Ϫ.12/Ϫ.16 .00/.14 Responsibility items Can be somewhat careless (Original) .01/Ϫ.14 Ϫ.15/Ϫ.07 ؊.61/؊.55 Ϫ.06/Ϫ.04 .03/Ϫ.14 Sometimes behaves irresponsibly (New) .07/.02 Ϫ.17/Ϫ.15 ؊.59/؊.52 Ϫ.10/Ϫ.09 .07/.08 Is reliable, can always be counted on (Revised) .12/.09 .30/.32 .54/.51 .14/.13 .02/.18 Is dependable, steady (New) .08/.09 .22/.18 .51/.52 .19/.14 .01/.15 Negative Emotionality Anxiety items This document is copyrighted by the American Psychological Association or one of its allied publishers. Is relaxed, handles stress well (Original) .05/.07 .04/.05 .10/.08 .76/.76 .07/.11 This article is intended solely for the personal use of the individual user and is notWorries to be disseminated broadly. a lot (Original) Ϫ.18/Ϫ.19 .01/.04 .09/.08 ؊.69/؊.71 .01/Ϫ.11 Rarely feels anxious or afraid (New) .13/.12 Ϫ.01/Ϫ.09 .03/Ϫ.06 .66/.65 Ϫ.04/Ϫ.02 Can be tense (Original) Ϫ.06/Ϫ.05 Ϫ.15/Ϫ.13 .04/.12 ؊.59/؊.59 .05/Ϫ.01 Depression items Often feels sad (New) ؊.36/؊.36 Ϫ.09/Ϫ.15 Ϫ.17/Ϫ.19 ؊.64/؊.57 .04/.03 Tends to feel depressed, blue (Revised) ؊.39/؊.34 Ϫ.08/Ϫ.19 Ϫ.14/Ϫ.25 ؊.64/؊.56 .09/.09 Feels secure, comfortable with self (New) .33/.31 .09/.14 .19/.30 .58/.53 .04/.02 Stays optimistic after experiencing a setback (New) .33/.31 .15/.26 .20/.22 .56/.46 .12/.08 Emotional Volatility items Is emotionally stable, not easily upset (Original) .00/.01 .09/.13 .13/.18 .80/.77 .05/.01 Is temperamental, gets emotional easily (New) .10/.05 Ϫ.05/Ϫ.11 Ϫ.11/Ϫ.13 ؊.73/؊.71 Ϫ.04/Ϫ.06 Keeps their emotions under control (New) Ϫ.16/Ϫ.12 .05/.12 .23/.26 .70/.64 .07/Ϫ.02 Is moody, has up and down mood swings (Revised) Ϫ.02/Ϫ.09 Ϫ.22/Ϫ.16 Ϫ.17/Ϫ.28 ؊.64/؊.64 .03/.00 Open-Mindedness

BFI-2: THE NEXT BIG FIVE INVENTORY 131

Table 6 (continued)

Negative Open- Item (Original, revised, or new BFI item) Extraversion Agreeableness Conscientiousness Emotionality Mindedness

Intellectual Curiosity items Has little interest in abstract Ideas (New) Ϫ.02/Ϫ.01 Ϫ.06/Ϫ.02 .09/Ϫ.06 Ϫ.07/Ϫ.02 ؊.69/؊.68 Is complex, a deep thinker (Revised) Ϫ.09/.02 Ϫ.03/Ϫ.02 .12/.18 Ϫ.12/Ϫ.02 .56/.57 Avoids intellectual, philosophical discussions (New) Ϫ.06/Ϫ.15 .08/.01 .05/Ϫ.14 Ϫ.01/Ϫ.08 ؊.54/؊.52 Is curious about many different things (Revised) .04/.17 .15/.30 Ϫ.06/.13 Ϫ.05/Ϫ.02 .50/.50 Aesthetic Sensitivity items Is fascinated by art, music, or literature (Revised) Ϫ.12/Ϫ.11 .09/.17 Ϫ.11/Ϫ.06 Ϫ.07/Ϫ.09 .67/.69 Has few artistic interests (Original) Ϫ.03/.01 Ϫ.08/Ϫ.13 .05/.06 .04/.03 ؊.64/؊.63 Values art and beauty (Revised) Ϫ.03/Ϫ.11 .07/.17 .00/Ϫ.05 Ϫ.03/Ϫ.07 .61/.64 Thinks poetry and plays are boring (New) Ϫ.01/.01 Ϫ.11/Ϫ.13 .01/Ϫ.02 .04/.18 ؊.54/؊.64 Creative Imagination items Has little creativity (New) Ϫ.15/Ϫ.17 Ϫ.07/Ϫ.02 .03/.05 .00/Ϫ.12 ؊.66/؊.68 Is inventive, finds clever ways to do things (Revised) .25/.09 Ϫ.06/Ϫ.03 .14/.04 .13/.22 .55/.60 Is original, comes up with new Ideas (Original) .24/.18 .03/.05 .08/.02 .19/.27 .57/.57 Has difficulty imagining things (New) Ϫ.12/Ϫ.12 Ϫ.10/Ϫ.11 .05/.01 Ϫ.10/.00 ؊.54/؊.51 Note. BFI-2 items adapted from “Conceptualization, Development, and Initial Validation of the Big Five Inventory-2,” by C. J. Soto and O. P. John, 2015, Paper presented at the biennial meeting of the Association for Research in Personality. Copyright 2015 by Oliver P. John and Christopher J. Soto. Reprinted with permission. Original ϭ Item kept from the original BFI. Revised ϭ Item revised from the original BFI. New ϭ New item written for the BFI-2. Table entries are loadings on varimax-rotated principal components. Values left of each forward slash are for the Internet validation sample (N ϭ 1,000); values right of each forward slash are for the student validation sample (N ϭ 470). Absolute loadings of .30 or stronger are bolded. All items were within-person centered before analysis.

Nomological network and predictive power. Our fifth and Intellectual Curiosity), Agreeableness (especially Compassion), final objective for Study 3 was to examine the BFI-2’s nomolog- and Extraversion (especially Energy Level). ical network: its substantive relations with and capacity to predict To compare the predictive power of the BFI-2 with the original conceptually relevant criteria (Cronbach & Meehl, 1955). We were BFI, we conducted a series of regressions predicting each of the 20 particularly interested in testing whether the BFI-2’s balance be- self-reported and peer-reported criteria from either (a) the five BFI tween bandwidth and fidelity would provide greater predictive domain scales, (b) the 10 post hoc BFI facet scales, (c) the five power than the original BFI. We pursued this objective using a BFI-2 domain scales, or (d) the 15 BFI-2 facet scales. The pro- broad set of self-reported and peer-reported criteria. Table 10 portion of criterion variance explained by each regression is pre- presents each criterion’s correlations with the BFI-2 domain sented in Table 11, and the average predictive power for each set scales, as well as standardized coefficients from regressions that of predictors (i.e., mean R2, averaged across all 20 criteria) is included all five domains as predictors.6 Table 10 also presents the shown in Figure 4. This figure’s leftmost bar shows that the correlations and standardized coefficients for each criterion’s original BFI domain scales collectively explained about one quar- strongest facet-level predictors; these facets were identified by ter of the criterion variance, on average (mean R2 ϭ .25). This forward regressions with an inclusion criterion of p Ͻ .01 and a maximum of three predictors. represents a substantial degree of predictive power, but also leaves The results shown in Table 10 reveal two important patterns. room for improvement. The next two bars illustrate that both the 2 ϭ First, supporting the BFI-2’s predictive breadth, each domain and greater fidelity of the post hoc BFI facet scales (mean R .27) 2 ϭ facet scale significantly predicted at least one criterion; conversely, and the greater bandwidth of the BFI-2 domain scales (mean R each criterion was significantly predicted by at least one domain .27) provided modest boosts to predictive accuracy over the orig- and facet scale. Second, supporting the BFI-2’s predictive speci- inal BFI domains. However, the most striking feature of Figure 4 ficity, each criterion was associated with a distinctive and concep- is its rightmost bar, which shows that the BFI-2 facet scales tually meaningful set of predictors. Some criteria were clearly provided considerably more predictive power (mean R2 ϭ .33) This document is copyrighted by the American Psychological Association or one of its allied publishers. linked with a particular Big Five domain. For example, benevolent than any other set of predictors. Table 11 shows that this general This article is intended solely for the personal use of the individual user and is not to be disseminated broadly. behavior was most strongly predicted by Agreeableness (especially Compassion and Trust), hedonistic behavior by low Consci- entiousness (especially low Productiveness and Responsibility), self-directed behavior by Open-Mindedness (especially Intellec- tual Curiosity and Creative Imagination), peer-reported likability by Agreeableness (especially Trust), and peer-reported stress re- 6 Each Big Five domain’s pattern of associations with the self-reported sistance by low Negative Emotionality (especially low Emotional and peer-reported criteria was very similar between the original BFI and Volatility and Anxiety). Other criteria were predicted by a com- the BFI-2. Column vector correlations comparing the two measures’ pat- bination of traits that spanned multiple domains. For example, terns of zero-order correlations across the 20 criteria averaged .98, as did power-seeking behavior was predicted by both low Agreeableness column vector correlations comparing the measures’ patterns of standardized regression coefficients. However, associations with the criteria tended (especially Compassion and Respectfulness) and high Extraver- to be slightly stronger for the BFI-2 than for the original BFI, yielding the sion (especially Assertiveness), and personal growth well-being somewhat larger proportions of explained variance presented in Table 11 was predicted by a combination of Open-Mindedness (especially and Figure 4.

132 SOTO AND JOHN

Table 7 Loadings From a Principal Components Analysis of the 15 BFI-2 Facets (Study 3)

Facet Extraversion Agreeableness Conscientiousness Negative Emotionality Open-Mindedness

Extraversion Sociability .88/.89 .06/.00 Ϫ.07/Ϫ.05 Ϫ.08/Ϫ.10 Ϫ.05/.02 Energy Level .78/.79 .26/.25 .15/.17 Ϫ.12/Ϫ.12 .12/.07 Assertiveness .74/.72 ؊.22/؊.22 .23/.24 Ϫ.13/Ϫ.14 .24/.24 Agreeableness Compassion .16/.13 .83/.82 .14/.17 .10/.11 .12/.21 Respectfulness Ϫ.14/Ϫ.27 .80/.74 .24/.24 Ϫ.15/Ϫ.18 .05/.15 Trust .12/.15 .75/.79 Ϫ.03/Ϫ.03 ؊.32/؊.30 .02/.00 Conscientiousness Organization .01/Ϫ.03 .00/.05 .85/.83 Ϫ.04/Ϫ.03 Ϫ.08/.00 Productiveness .22/.29 .11/.04 .83/.78 Ϫ.13/Ϫ.16 .05/.03 Responsibility .03/.09 .26/.22 .78/.78 Ϫ.16/Ϫ.14 Ϫ.03/.12 Negative Emotionality Anxiety Ϫ.14/Ϫ.14 Ϫ.06/Ϫ.01 .00/.05 .89/.88 .01/Ϫ.07 Emotional Volatility .05/.00 Ϫ.14/Ϫ.17 ؊.20/؊.25 .86/.83 Ϫ.04/Ϫ.01 Depression ؊.43/؊.41 Ϫ.12/Ϫ.20 ؊.21/؊.28 .73/.67 Ϫ.01/.01 Open-Mindedness Intellectual Curiosity .01/.13 .01/.08 Ϫ.04/.16 .02/Ϫ.02 .83/.78 Aesthetic Sensitivity Ϫ.03/Ϫ.07 .11/.18 Ϫ.05/Ϫ.04 .05/.12 .80/.79 Creative Imagination .26/.18 .05/.03 .04/.01 Ϫ.12/Ϫ.20 .76/.78 Congruence .99 .99 .99 1.00 .98 Note. Table entries are loadings on varimax-rotated principal components. Values left of each forward slash are for the Internet validation sample (N ϭ 1,000); values right of each forward slash are for the student validation sample (N ϭ 470). Absolute loadings of .20 or stronger are bolded. Congruence ϭ Congruence coefficients comparing pairs of corresponding components between the Internet and student samples.

pattern—with the BFI-2 facets clearly explaining the greatest (Nye, Allemand, Gosling, Potter, & Roberts, 2015). The BFI-2 proportion of criterion variance—generalized across the self- thus extends the BFI’s robust Big Five structure to the facet level. reported and peer-reported criteria.7 Our second goal was to balance bandwidth and fidelity, and Taken together, these results support three key conclusions analyses of the BFI-2’s nomological network indicate that it pro- about the BFI-2’s nomological network and predictive power. vides greater conceptual breadth and specificity, and thus greater First, the BFI-2 domain and facet scales relate meaningfully with predictive power, than the original BFI. Regarding bandwidth, the a variety of criteria, and these substantive relations support the hierarchical model used to develop the BFI-2 ensured that each scales’ construct validity. Second, the BFI-2’s hierarchical struc- domain was broad enough to subsume three facet traits. This ture enhances its predictive power. The BFI-2 facet scales were bandwidth allowed the BFI-2 domains to more strongly converge developed to capture important distinctions within each Big Five with other Big Five measures, and to more accurately predict a domain, and these distinctions substantially increase the measure’s variety of criteria, than the original BFI domains (see Table 9 and capacity to predict self-reported and peer-reported criteria. Third, Figure 4). Regarding fidelity, the 15 BFI-2 facets provide an the BFI-2 provides greater predictive power than the original BFI additional level of conceptual specificity within the superordinate at both the domain level and—especially—the facet level. domains. This fidelity allowed the BFI-2 facets to show distinctive relations with self-reported and peer-reported criteria, and substan- General Discussion tially enhanced their predictive power over the BFI and BFI-2 We developed the BFI-2 with four major goals in mind. To domains, as well as the post hoc BFI facet scales (see Table 10 and what extent did the present research achieve these goals? Our Figure 4). This document is copyrighted by the American Psychological Association or one of its allied publishers. first goal was to develop a robust hierarchical structure. We Our third goal was to minimize the influence of acquiescent This article is intended solely for the personal use of the individual user and is not to be disseminated broadly. addressed this goal by conceptualizing and measuring 15 traits responding at both the scale and item levels, and the BFI-2 that we propose constitute a minimally necessary set for cap- achieves this goal through balanced content. Some scales on the turing facet-level personality information within each Big Five domain (see Table 1; cf. DeYoung et al., 2007; John et al., 2008). We found that, at the domain level, the Big Five can be 7 This pattern was also consistent with hierarchical regression anal- clearly recovered from both the BFI-2 items and facets (see yses conducted to test incremental changes in explained variance. For example, when the original BFI domain scales were entered as a first Tables 6 and 7). At the facet level, the items within each domain block of predictors, entering the post hoc BFI facet scales as a second can be modeled by three substantive facet factors plus an block produced a significant increase in explained variance for 8 of the acquiescence method factor (see Table 8). This hierarchical 20 criteria, entering the BFI-2 domains produced a significant increase structure, with three facets nested within each Big Five domain, for 10 criteria, and entering the BFI-2 facets produced a significant increase for 14 criteria. Similarly, when either the post hoc BFI facets is an important advance over the original BFI. Although the post or the BFI-2 domains were entered as a first block of predictors, hoc BFI facet scales offer some degree of differentiation within entering the BFI-2 facets as a second block produced a significant each domain, they do not constitute a true hierarchical structure increase for 14 of the 20 criteria.

BFI-2: THE NEXT BIG FIVE INVENTORY 133

Table 8 Fit Statistics for Confirmatory Factor Analyses of the BFI-2 Items (Study 3)

Model ␹2 df BIC CFI TLI RMSEA

Extraversion Single domain 1085.28/555.58 54 35282/15429 .786/.781 .738/.732 .138/.141 Single domain plus acquiescence 1073.86/531.10 53 35277/15410 .788/.791 .736/.740 .139/.139 Positive and negative items 1063.79/525.48 53 35267/15405 .790/.793 .739/.743 .138/.138 Three facets 389.25/251.77 51 34607/15143 .930/.912 .909/.886 .081/.092 Three facets plus acquiescence 331.78/204.92 50 34556/15103 .941/.932 .923/.911 .075/.081 Agreeableness Single domain 648.71/364.73 54 33394/14695 .805/.800 .762/.755 .105/.111 Single domain plus acquiescence 430.08/285.94 53 33183/14622 .876/.850 .846/.813 .084/.097 Positive and negative items 433.11/291.03 53 33186/14628 .875/.847 .845/.809 .085/.098 Three facets 492.31/243.22 51 33259/14592 .855/.876 .813/.840 .093/.090 Three facets plus acquiescence 196.82/128.96 50 32970/14484 .952/.949 .936/.933 .054/.058 Conscientiousness Single domain 1023.12/412.69 54 34085/15208 .793/.793 .747/.747 .134/.119 Single domain plus acquiescence 939.87/357.20 53 34008/15159 .811/.824 .765/.781 .129/.111 Positive and negative items 982.00/380.14 53 34050/15182 .802/.811 .753/.765 .132/.115 Three facets 508.63/233.29 51 33591/15047 .902/.895 .874/.864 .095/.087 Three facets plus acquiescence 338.36/133.23 50 33428/14953 .939/.952 .919/.937 .076/.060 Negative Emotionality Single domain 1144.80/609.03 54 35166/15683 .805/.779 .762/.730 .142/.148 Single domain plus acquiescence 1043.76/579.50 53 35072/15660 .823/.790 .780/.739 .137/.145 Positive and negative items 1012.23/563.46 53 35040/15644 .829/.797 .787/.747 .135/.143 Three facets 520.96/252.43 51 34563/15345 .916/.920 .891/.896 .096/.092 Three facets plus acquiescence 328.11/180.76 50 34377/15279 .950/.948 .934/.931 .075/.075 Open-Mindedness Single domain 839.22/632.83 54 33713/15235 .758/.697 .704/.629 .121/.151 Single domain plus acquiescence 814.63/619.58 53 33695/15227 .765/.703 .708/.630 .120/.151 Positive and negative items 814.92/618.33 53 33696/15226 .765/.704 .708/.631 .120/.151 Three facets 361.14/235.50 51 33256/14856 .904/.903 .876/.875 .078/.088 Three facets plus acquiescence 277.90/168.78 50 33179/14795 .930/.938 .907/.918 .068/.071 Note. BIC ϭ Bayesian information criterion; CFI ϭ Comparative fit index; TLI ϭ Tucker-Lewis index; RMSEA ϭ Root mean square error of approximation. Values left of each forward slash are for the Internet validation sample (N ϭ 1,000); values right of each forward slash are for the student validation sample (N ϭ 470). CFI and TLI values Ն .900, and RMSEA values Յ .080, are bolded.

original BFI—especially Open-Mindedness and several of the BFI-2 to 60 total items, so that the inventory can be completed in post hoc facet scales—have a substantial imbalance of true- 10 min or less. We therefore expect that the BFI-2 will prove to be keyed and false-keyed items, allowing acquiescence to distort as conceptually coherent, easy to understand, and efficient to use their associations with other variables (Danner, Aichholzer, & as the original BFI. Rammstedt, 2015). In contrast, each BFI-2 domain and facet scale includes an equal number of true-keyed and false-keyed Broader Implications and Lessons Learned items. Thus, individual differences in acquiescence are automatically controlled at the scale level. The BFI-2’s balanced The present research has important implications for future stud- content also makes it easier to address acquiescence at the item ies examining personality structure and psychological assessment. level, because simple within-person centering around each in- One such implication is the utility of factor-pure and complemen- dividual’s mean item response effectively controls for acquies- tary facets. A persistent problem in the development of hierarchi- This document is copyrighted by the American Psychological Association or one of its allied publishers. cence (see Figure 1). In contrast, the original BFI’s imbalanced cal measures is that the selection of lower-order constructs can This article is intended solely for the personal use of the individual user and is not to be disseminated broadly. content means that simple within-person centering removes influence a measure’s higher-order structure in undesirable ways meaningful personality information along with acquiescence, a (Costa & McCrae, 1995; Goldberg, 1993a). For example, imagine problem that can only be avoided by means of specially con- that a hypothetical Big Five measure includes several facet scales structed (and rarely used) acquiescence scales (e.g., Soto et al., conceptually related to both low Agreeableness and high Negative 2008, p. 737). Thus, compared with the original BFI, the BFI-2 Emotionality (e.g., anger, antagonism, defensiveness, intolerance, is more resilient to the influence of acquiescence at both the irritability, moodiness, sarcasm, selfishness, suspicion, vanity). In scale and item levels. this case, domain-level factor analyses may reveal that the either Our final goal was for the BFI-2 to retain the focus, clarity, and Agreeableness or Negative Emotionality factor has been unexpect- brevity of the original BFI. To promote focus, we ensured that edly rotated toward this interstitial cluster of closely related facets each BFI-2 domain and facet scale’s conceptual definition was (to capture their shared variance), while the other domain factor reflected in its item content. To promote clarity, we revised a has been rotated away from it (to capture the variance of facets number of original BFI items to elaborate their meaning or replace falling outside this cluster). The BFI-2 addresses this potential difficult vocabulary words. To ensure brevity, we limited the problem by using a factor-pure facet—identified by previous re-

134 SOTO AND JOHN

Facet 1 Facet 2 Facet 3

1 1 1

Item 1 Item 2 Item 3 Item 4 Item 5 Item 6 Item 7 Item 8 Item 9 Item 10 Item 11 Item 12

1 1 1 1 1 1 1 1 1 1 1 1

Acquiescence

Figure 2. Illustration of the three facets plus acquiescence CFA model (Study 3).

search as central to its own domain and independent from the other power than their corresponding domain scales (see Figure 4). four domains (Hofstee et al., 1992)—to partially define each of the However, researchers have disagreed about whether the apparent Big Five. The present results indicate that this strategy successfully incremental validity of narrow traits over broad ones reflects their anchored the five domains in multidimensional space (see Table greater fidelity or is simply a statistical artifact (cf. Ones & 7). Importantly, however, the BFI-2 also uses complementary Viswesvaran, 1996; Paunonen, Rothstein, & Jackson, 1999). For facets to broaden each domain’s definition beyond its factor-pure example, compared with domain-level Big Five measures, facet- facet, and these complementary facets proved to be both concep- level measures provide a greater number of potential predictors; tually and empirically valuable. For example, we found Organiza- therefore, they may be more prone to capitalizing on chance in tion to be a remarkably factor-pure facet of Conscientiousness. regressions predicting external criteria. The present findings argue However, it is arguably the least conceptually interesting BFI-2 against such an interpretation. If number of predictors were the Conscientiousness facet, and Productiveness and Responsibility primary determinant of predictive power, then we would expect a more strongly predicted several criteria (see Table 10). We there- substantial boost in explained criterion variance from the five BFI fore propose that broad constructs like the Big Five domains are and BFI-2 domains to the 10 post hoc BFI facet scales, followed best conceptualized and measured using a combination of factor- by a smaller boost to the 15 BFI-2 facets (due to diminishing pure facets (to empirically anchor each superordinate construct) returns for each additional predictor). However, we found a very and complementary facets (to add conceptual and empirical different pattern. The post hoc BFI facets provided only a modest breadth). Future research conducted to hierarchically measure sets increase in predictive power over the original BFI domains, and of similarly broad constructs should benefit from this approach. essentially no increase over the BFI-2 domains; the BFI-2 facets, A second, related implication concerns the conceptualization of however, provided a substantial increase in predictive power over Open-Mindedness. Researchers have debated whether this domain the post hoc BFI facets (see Figure 4). should be primarily defined in terms of intellect, imagination, or What explains this surprising pattern of results? We propose that openness to art and beauty (DeYoung, 2014). The present research addressed these alternative conceptualizations by including Intel- it reflects differences in the approaches used to develop the BFI This document is copyrighted by the American Psychological Association or one of its allied publishers. lectual Curiosity, Creative Imagination, and Aesthetic Sensitivity versus the BFI-2. The original BFI items were developed to This article is intended solely for the personal use of the individual user and is not to be disseminated broadly. as the BFI-2’s three Open-Mindedness facets. We found that all maximize coherence within each Big Five domain, as well as three facets were quite central to their domain (see Table 7). We differentiation between the domains (John, 1989, 1990; John & therefore propose that Open-Mindedness is better conceptualized Srivastava, 1999). This focus on the domain level limited the as broadly subsuming Intellectual Curiosity, Aesthetic Sensitivity, ability of subsequent research to draw facet-level distinctions and Creative Imagination than as narrowly focused on any one of within each domain (Nye et al., 2015; Soto & John, 2009a). In them (cf. DeYoung et al., 2007). contrast, development of the BFI-2 was guided, from the outset, by A third implication concerns the bandwidth-fidelity tradeoff, a hierarchical model of personality structure that drew clear dis- especially the predictive power of broad (e.g., domains) versus tinctions both between and within the Big Five (see Table 1). This narrow (e.g., facets) personality traits. Previous studies have found model facilitated the development of BFI-2 facet scales with that narrow traits can provide greater predictive accuracy than greater fidelity (i.e., greater coherence within facets and better broad traits across a variety of criteria (e.g., Ashton et al., 1995; differentiation between facets) than their post hoc BFI counter- Paunonen & Ashton, 2001). Similarly, the present findings indi- parts. This greater fidelity, in turn, translated into greater predic- cate that the BFI and BFI-2 facet scales provide greater predictive tive power. Thus, the present findings indicate that the predictive

BFI-2: THE NEXT BIG FIVE INVENTORY 135

Table 9 Correlations of the BFI-2 and BFI Domains With the Mini-Markers, BFAS, NEO-FFI, and NEO PI-R in the Student Validation Sample (Study 3)

BFI-2 BFI Domain Ext. Agr. Con. Neg. Ope. Ext. Agr. Con. Neg. Ope.

BFI Extraversion .93 .02 .18 Ϫ.32 .10 Agreeableness .09 .93 .30 Ϫ.36 .23 .06 Conscientiousness .35 .27 .91 Ϫ.42 .20 .24 .27 Negative Emotionality Ϫ.31 Ϫ.29 Ϫ.29 .94 Ϫ.12 Ϫ.27 Ϫ.34 Ϫ.34 Open-Mindedness .22 .16 .07 Ϫ.11 .87 .14 .15 .14 Ϫ.13 BFAS Extraversion .87 .19 .34 Ϫ.40 .25 .80 .21 .43 Ϫ.35 .24 Agreeableness Ϫ.02 .73 .23 Ϫ.09 .30 Ϫ.09 .67 .25 Ϫ.09 .17 Conscientiousness .30 .15 .82 Ϫ.31 .05 .18 .14 .80 Ϫ.23 .00 Negative Emotionality Ϫ.32 Ϫ.40 Ϫ.36 .88 Ϫ.17 Ϫ.28 Ϫ.45 Ϫ.42 .86 Ϫ.17 Open-Mindedness .25 .22 .18 Ϫ.24 .78 .13 .21 .26 Ϫ.25 .73 Mini-markers Extraversion .88 .08 .22 Ϫ.35 .14 .90 .13 .29 Ϫ.31 .17 Agreeableness .11 .80 .31 Ϫ.22 .29 .06 .77 .31 Ϫ.19 .20 Conscientiousness .26 .20 .84 Ϫ.34 .12 .14 .21 .82 Ϫ.28 .07 Negative Emotionality Ϫ.15 Ϫ.46 Ϫ.35 .74 Ϫ.22 Ϫ.10 Ϫ.50 Ϫ.39 .74 Ϫ.19 Open-Mindedness .22 .11 .16 Ϫ.14 .75 .12 .12 .22 Ϫ.17 .75 NEO-FFI Extraversion .71 .29 .24 Ϫ.38 .18 .69 .34 .28 Ϫ.32 .21 Agreeableness .01 .74 .23 Ϫ.26 .21 Ϫ.03 .72 .22 Ϫ.26 .14 Conscientiousness .27 .21 .80 Ϫ.33 .16 .16 .21 .79 Ϫ.27 .14 Negative Emotionality Ϫ.40 Ϫ.21 Ϫ.39 .76 Ϫ.11 Ϫ.37 Ϫ.25 Ϫ.44 .74 Ϫ.14 Open-Mindedness .12 .21 .02 Ϫ.02 .73 .03 .18 .07 Ϫ.06 .68 NEO PI-R Extraversion .68 .30 .14 Ϫ.22 .10 .67 .33 .19 Ϫ.17 .10 Agreeableness Ϫ.25 .71 .05 Ϫ.05 .21 Ϫ.25 .66 .03 Ϫ.06 .12 Conscientiousness .20 .08 .74 Ϫ.14 .18 .06 .06 .74 Ϫ.07 .14 Negative Emotionality Ϫ.37 Ϫ.14 Ϫ.19 .73 Ϫ.01 Ϫ.38 Ϫ.21 Ϫ.25 .73 Ϫ.08 Open-Mindedness .06 .25 Ϫ.01 Ϫ.02 .74 Ϫ.03 .21 .05 Ϫ.06 .69 Note. N ϭ 438. Ext. ϭ Extraversion; Agr. ϭ Agreeableness; Con. ϭ Conscientiousness; Neg. ϭ Negative Emotionality; Ope. ϭ Open-Mindedness. Convergent correlations are bolded. Absolute correlations of .10 or stronger are significant at p Ͻ .05.

utility of narrow trait measures depends more on their quality than 2008) and less well educated (Rammstedt & Farmer, 2013) re- their quantity. spondents, as well as in more-collectivistic cultures (Rammstedt, A fourth implication of the present research concerns acquies- Kemper, & Borg, 2013). However, this research has been limited cence. Researchers have long known that acquiescent responding to using subsets of BFI items, because of the measure’s imbal- can bias the reliability, validity, and structure of psychological anced content. In contrast, the BFI-2’s fully content-balanced item measures (Cronbach, 1946; Jackson & Messick, 1958). The pres- set allows individual differences in acquiescence to be measured ent findings add to this literature by indicating that acquiescence and clearly distinguished from meaningful personality information does affect BFI-2 item responses, and therefore modestly biases at multiple levels of abstraction: within a specific facet, within a the raw items’ domain-level structure (see Figure 1) and more Big Five domain, or across all five domains. For example, an substantially biases their facet-level structure (see Table 8). Our individual’s general acquiescence tendency can be indexed by This document is copyrighted by the American Psychological Association or one of its allied publishers. findings also indicate that the BFI-2’s content-balanced scales simply averaging their 60 BFI-2 item responses without reversing This article is intended solely for the personal use of the individual user and is not to be disseminated broadly. effectively control for acquiescence (see Table 7). Therefore, re- the false-keyed items (e.g., an extreme yea-sayer who strongly searchers interested in examining the BFI-2’s scale-level associa- agrees with all 60 items would receive an acquiescence score of tions with other variables can safely score each domain and facet 5.00, whereas an extreme naysayer who strongly disagrees with all scale using simple aggregation of the raw item responses. How- 60 items would receive an acquiescence score of 1.00). Acquies- ever, we strongly recommend that researchers interested in con- cence can also be modeled as a latent variable that all items (both ducting item-level analyses of the BFI-2 account for the influence true-keyed and false-keyed) are constrained to load on equally (see of acquiescence by either centering each individual’s set of item Figure 2). Thus, the BFI-2 should prove useful for future research responses around their within-person mean or modeling acquies- examining the causes, correlates, and consequences of acquiescence as a method factor (see Figure 2). cence. The BFI-2 can also be used in future research examining the A final implication concerns the accuracy of personality self- phenomenon of acquiescent responding itself. For example, recent reports and peer-reports. We found good overall self-peer agree- studies using the original BFI have shown that acquiescence ef- ment for the BFI-2, but also considerable variability in the degree fects tend to be especially pronounced among younger (Soto et al., of agreement across the Big Five domains and especially across

136 SOTO AND JOHN This document is copyrighted by the American Psychological Association or one of its allied publishers. This article is intended solely for the personal use of the individual user and is not to be disseminated broadly.

Figure 3. Correlations of the BFI-2 facets with the BFAS aspects and NEO PI-R facets (Study 3). N ϭ 438. NEO ϭ NEO PI-R. See the online article for the color version of this figure.

BFI-2: THE NEXT BIG FIVE INVENTORY 137

Table 10 Associations of the BFI-2 Domains and Facets With Self-Reported and Peer-Reported Criteria (Study 3)

Criterion Ext. r/␤ Agr. r/␤ Con. r/␤ Neg. r/␤ Ope. r/␤ Strongest facet predictors (r/␤)

Behavioral criteria ,(Conformity ؊.35/Ϫ.32 .23/.31 .08/.17 .17/.19 Ϫ.14/Ϫ.15 Respectfulness (.39/.38), Sociability (Ϫ.36/Ϫ.25 Creative Imagination (Ϫ.23/Ϫ.23) /Tradition ؊.24/Ϫ.27 .02/.03 Ϫ.06/.03 Ϫ.05/Ϫ.04 Ϫ.14/Ϫ.16 Sociability (Ϫ.24/Ϫ.25), Intellectual Curiosity (Ϫ.21 Ϫ.19), Anxiety (Ϫ.07/Ϫ.14) Benevolence .11/.08 .52/.52 .18/.05 Ϫ.09/.12 .23/.10 Compassion (.47/.29), Trust (.45/.28), Intellectual Curiosity (.24/.14) ,(Power .30/.38 ؊.52/Ϫ.50 Ϫ.11/Ϫ.07 .01/Ϫ.04 ؊.21/Ϫ.16 Assertiveness (.36/.31), Compassion (Ϫ.44/Ϫ.30 Respectfulness (Ϫ.51/Ϫ.29) Universalism .01/.00 .20/.19 Ϫ.02/Ϫ.08 Ϫ.04/.00 .15/.11 Trust (.21/.20), Aesthetic Sensitivity (.14/.13) /Hedonism Ϫ.01/.10 ؊.22/Ϫ.12 ؊.37/Ϫ.37 .11/Ϫ.02 Ϫ.08/Ϫ.02 Productiveness (Ϫ.35/Ϫ.29), Responsibility (Ϫ.34 Ϫ.19), Sociability (.10/.18) Security Ϫ.18/Ϫ.23 .00/Ϫ.02 .26/.37 .03/.05 Ϫ.17/Ϫ.16 Organization (.30/.32), Sociability (Ϫ.19/Ϫ.18), Intellectual Curiosity (Ϫ.15/Ϫ.16) ,(Stimulation .15/.19 Ϫ.16/Ϫ.15 ؊.25/Ϫ.32 Ϫ.03/Ϫ.10 .11/.15 Sociability (.21/.23), Responsibility (Ϫ.25/Ϫ.18 Organization (Ϫ.26/Ϫ.16) Achievement .15/.15 Ϫ.12/Ϫ.16 .20/.25 .01/.09 Ϫ.05/Ϫ.07 Productiveness (.26/.28), Trust (Ϫ.11/Ϫ.15) Self-direction .10/Ϫ.05 Ϫ.01/Ϫ.18 .07/.01 Ϫ.15/Ϫ.17 .43/.47 Intellectual Curiosity (.44/.39), Creative Imagination (.36/.19), Compassion (.00/Ϫ.13) Psychological criteria ,(Positive relations .47/.38 .46/.39 .39/.09 ؊.40/Ϫ.13 .24/.03 Depression (Ϫ.53/Ϫ.38), Compassion (.41/.33 Sociability (.39/.25) ,(Purpose in life .47/.30 .30/.16 .54/.33 ؊.39/Ϫ.12 .24/.06 Energy level (.53/.29), Depression (Ϫ.55/Ϫ.29 Responsibility (.49/.27) (Environmental mastery .49/.25 .29/.09 .57/.33 ؊.58/Ϫ.35 .18/.00 Depression (Ϫ.65/Ϫ.51), Productiveness (.56/.35 ,(Self-acceptance .49/.28 .30/.11 .51/.23 ؊.57/Ϫ.35 .25/.09 Depression (Ϫ.68/Ϫ.49), Responsibility (.47/.20 Energy level (.53/.20) ,(Autonomy .30/.10 .19/Ϫ.02 .36/.19 ؊.38/Ϫ.25 .35/.26 Responsibility (.40/.30), Creative Imagination (.39/.26 Anxiety (Ϫ.32/Ϫ.25) ,(Personal growth .35/.24 .44/.31 .40/.16 ؊.28/Ϫ.02 .45/.28 Intellectual Curiosity (.50/.37), Compassion (.48/.29 Energy level (.41/.26) Peer-reported criteria (Social connectedness .25/.20 .32/.27 .20/.06 ؊.27/Ϫ.09 .04/Ϫ.03 Energy level (.33/.33), Respectfulness (.29/.28 Likability .16/.17 .27/.28 .10/.01 Ϫ.08/.06 .06/.01 Trust (.25/.25) Stress resistance .24/.09 .16/.01 .15/Ϫ.03 ؊.51/Ϫ.49 Ϫ.01/Ϫ.02 Emotional Volatility (Ϫ.47/Ϫ.32), Anxiety (Ϫ.46/Ϫ.28) (Positive affect .37/.26 .09/Ϫ.02 .19/.05 ؊.40/Ϫ.31 Ϫ.04/Ϫ.07 Depression (Ϫ.42/Ϫ.35), Sociability (.32/.19 Note. For behavioral criteria, N ϭ 439 and correlations of .10 or stronger are significant at p Ͻ .05. For psychological criteria, N ϭ 179 and correlations of .15 or stronger are significant at p Ͻ .05. For peer-reported criteria, N ϭ 184 and correlations of .15 or stronger are significant at p Ͻ .05. Ext. ϭ Extraversion; Agr. ϭ Agreeableness; Con. ϭ Conscientiousness; Neg. ϭ Negative Emotionality; Ope. ϭ Open-Mindedness; Positive relations ϭ Positive relations with others. The domains’ standardized coefficients are from multiple regressions that enter the five domains simultaneously. The strongest facet predictors were identified by forward regressions with an inclusion criterion of p Ͻ .01 and a maximum of three predictors. Domain correlations and standardized regression coefficients of .20 or stronger are bolded.

their facets (see Table 4). Previous research has examined some and nomological network. However, the present research also had possible determinants of self-peer agreement, such as evaluative- some limitations that suggest important directions for future work.

This document is copyrighted by the American Psychological Association or one of its alliedness publishers. and observability (e.g., John & Robins, 1993; Vazire, 2010). One such limitation is that most of the present participants were

This article is intended solely for the personal use ofThe the individual user and is notBFI-2’s to be disseminated broadly. hierarchical structure should prove useful for future young or middle-aged adults with at least a high school level of work designed to further investigate this issue at the levels of the education. Therefore, additional research using more representa- broad Big Five domains, narrower facets, and highly specific tive samples will be needed to develop population norms for items. interpreting individual and group scores on the BFI-2. Moreover, previous research has shown that the original BFI can be com- Limitations and Future Directions pleted by youths and adults with relatively little formal education, The present research had several important methodological but that the measure tends to be somewhat less reliable and strengths, including its large community, Internet, and student differentiated in these groups (Rammstedt & Farmer, 2013; Soto et samples, its use of more than three thousand trait-descriptive al., 2008). While developing the BFI-2, we revised some BFI items adjectives and phrases as a rich source of personality-relevant item to define or replace difficult vocabulary words. However, addi- content, its integration of conceptual and empirical approaches to tional research will be needed to directly test whether these revi- scale development, and its broad set of criteria for evaluating the sions have made the BFI-2 easier to understand, thereby leading to BFI-2’s basic measurement properties, multidimensional structure, improved measurement properties among younger and less edu-

138 SOTO AND JOHN

Table 11 personality traits, as well as attributes such as characteristic adap- Predictive Power of the BFI and BFI-2 Domains and Facets tations and narrative identity, that fall beyond the Big Five (e.g., (Study 3) McAdams & Pals, 2006; Paunonen & Jackson, 2000). A second set of exclusions occurred at the facet level, when we BFI BFI BFI-2 BFI-2 selected three key facets within each Big Five domain. Our goal Criterion domains facets domains facets was to focus on facets that have been conceptually and empirically Behavioral criteria prominent in the personality literature. Thus, the BFI-2 includes Conformity .27 .27 .25 .36 facets that match closely with all 10 aspects of the BFAS, and with Tradition .09 .12 .09 .14 many of the 30 facets assessed by the NEO PI-R (see Figure 3). Benevolence .26 .28 .30 .32 Power .37 .37 .42 .45 However, limiting the BFI-2 to only three facets per domain meant Universalism .06 .06 .06 .09 excluding some potential facets. For example, the BFI-2 focuses Hedonism .15 .16 .16 .22 on cognitive and aesthetic, rather than behavioral, facets of Open- Security .15 .18 .17 .21 Mindedness. This decision reflects questionnaire-based and lexical Stimulation .15 .16 .15 .20 Achievement .09 .11 .10 .14 research indicating that cognitive and aesthetic content tends to be Self-direction .23 .24 .23 .27 most prominent within this domain (DeYoung et al., 2007; Mc- Mean .18 .20 .19 .24 Crae & Costa, 2010; Saucier & Ostendorf, 1999). However, will- Psychological criteria ingness to try new behaviors certainly remains an important per- Positive relations .46 .48 .45 .51 sonality characteristic. Other potential facets that were excluded Purpose in life .38 .41 .43 .51 Environmental mastery .50 .52 .54 .58 due to their relatively peripheral position within the Big Five Self-acceptance .46 .49 .51 .58 domains, but that remain important traits in their own right, in- Autonomy .27 .32 .28 .38 clude excitement-seeking, modesty, deliberation, and impulsivity Personal growth .36 .38 .42 .49 (see Figure 3). Mean .40 .43 .44 .51 Peer-reported criteria A final set of exclusions occurred at the item level, when we Social connectedness .17 .20 .18 .27 selected adjectives and phrases to operationalize the BFI-2 facets. Likability .09 .08 .10 .17 Specifically, establishing the BFI-2’s hierarchical structure re- Stress resistance .29 .29 .27 .33 quired us to exclude some interstitial content that fell between Positive affect .23 .25 .23 .29 multiple domains or facets. For example, when developing the Mean .19 .20 .19 .26 Overall mean .25 .27 .27 .33 BFI-2 Emotional Volatility facet we initially considered item content that explicitly assessed both moodiness/instability and ϭ ϭ Note. For behavioral criteria, N 439. For psychological criteria, N anger/irritability. However, analyses conducted during Study 1 179. For peer-reported criteria, N ϭ 184. Each table entry is the R2 value for a criterion variable predicted from a set of domain or facet scales. indicated that anger/irritability content fell in the interstitial space between the Negative Emotionality and Agreeableness domains, and between the Emotional Volatility and Depression facets. cated respondents. Research will also be needed to examine the Therefore, the final BFI-2 Emotional Volatility scale directly as- BFI-2’s reliability and validity among elderly adults. sesses moodiness/instability, and relies on the strong association A second, related limitation is that all of the present participants between moodiness/instability and anger/irritability to indirectly were residents of economically developed, English-speaking nations. The original BFI has now been translated into more than 25 languages and administered to members of more than 50 national cultures (e.g., Benet-Martínez & John, 1998; Denissen, Geenen, van Aken, Gosling, & Potter, 2008; Plaisant, Courtois, Réveillère, Mendelson, & John, 2010; Rammstedt & Farmer, 2013; Schmitt et al., 2007). Previous research has found both similarities and differences in the structure, mean levels, and correlates of the BFI across cultures, sparking debate about how these findings should This document is copyrighted by the American Psychological Association or one of its allied publishers. be interpreted (e.g., Chan et al., 2012; Heine, Buchtel, & Noren- This article is intended solely for the personal use of the individual user and is not to be disseminated broadly. zayan, 2008; Ramírez-Esparza, Mehl, Álvarez-Bermúdez, & Pen- nebaker, 2009). Future cultural research using the BFI-2 can help clarify these previous findings and investigate new questions. For example, we are curious to see whether and how the BFI-2’s facet-level structure will vary across languages and cultures. A third limitation concerns the brevity of the BFI-2. At 60 total items, the BFI-2 can efficiently measure the Big Five domains and 15 key facet traits, but cannot comprehensively measure all important personality characteristics. Thus, deciding what content to include on the BFI-2 necessarily entailed excluding some content. These inclusion versus exclusion decisions occurred at three lev- Figure 4. Mean R2 values for regression analyses predicting 20 self- els. Some occurred at the domain level: because the BFI-2 is reported and peer-reported criteria from the BFI and BFI-2 domains and designed to measure the Big Five, it excludes some important facets (Study 3). See the online article for the color version of this figure.

BFI-2: THE NEXT BIG FIVE INVENTORY 139

measure the latter content (as shown by BFI-2 Emotional Volatil- findings. Journal of Personality and Social Psychology, 81, 322–331. ity’s strong convergence with two scales that include considerable http://dx.doi.org/10.1037/0022-3514.81.2.322 anger/irritability content: BFAS Volatility and NEO PI-R Angry Cronbach, L. J. (1946). Response sets and test validity. Educational and Hostility; see Figure 3d). Psychological Measurement, 6, 475–494. These exclusion decisions at the domain, facet, and item levels Cronbach, L. J., & Gleser, G. C. (1957). Psychological tests and personnel decisions. Urbana, IL: University of Illinois Press. highlight that, although the BFI-2 is a highly efficient, hierarchi- Cronbach, L. J., & Meehl, P. E. (1955). Construct validity in psychological cally structured Big Five measure, its brevity means that it cannot tests. Psychological Bulletin, 52, 281–302. http://dx.doi.org/10.1037/ be entirely comprehensive. Thus, there is also considerable value h0040957 to longer measures that directly assess personality content falling Danner, D., Aichholzer, J., & Rammstedt, B. (2015). Acquiescence in between and beyond the Big Five. personality questionnaires: Relevance, domain specificity, and stability. Journal of Research in Personality, 57, 119–130. http://dx.doi.org/10 Conclusion .1016/j.jrp.2015.05.004 Denissen, J. J. A., Geenen, R., van Aken, M. A. G., Gosling, S. D., & Taken together, the present findings indicate that the BFI-2 is a Potter, J. (2008). Development and validation of a Dutch translation of reliable and valid measure of the Big Five domains and their key the Big Five Inventory (BFI). Journal of Personality Assessment, 90, facets, whose nomological network includes substantive relations 152–157. http://dx.doi.org/10.1080/00223890701845229 with a variety of self-reported and peer-reported criteria. Our DeYoung, C. G. (2014). 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142 SOTO AND JOHN

Appendix The Big Five Inventory-2 Self-Report Form and Scoring Information

Here are a number of characteristics that may or may not apply to you. For example, do you agree that you are someone who likes to spend time with others? Please write a number next to each statement to indicate the extent to which you agree or disagree with that statement.

1 2 3 4 5 Disagree strongly Disagree a little Neutral; no opinion Agree a little Agree strongly

I am someone who... 1. __ Is outgoing, sociable 31. __ Is sometimes shy, introverted 2. __ Is compassionate, has a soft heart 32. __ Is helpful and unselfish with others 3. __ Tends to be disorganized 33. __ Keeps things neat and tidy 4. __ Is relaxed, handles stress well 34. __ Worries a lot 5. __ Has few artistic interests 35. __ Values art and beauty 6. __ Has an assertive personality 36. __ Finds it hard to influence people 7. __ Is respectful, treats others with respect 37. __ Is sometimes rude to others 8. __ Tends to be lazy 38. __ Is efficient, gets things done 9. __ Stays optimistic after experiencing a setback 39. __ Often feels sad 10. __ Is curious about many different things 40. __ Is complex, a deep thinker 11. __ Rarely feels excited or eager 41. __ Is full of energy 12. __ Tends to find fault with others 42. __ Is suspicious of others’ intentions 13. __ Is dependable, steady 43. __ Is reliable, can always be counted on 14. __ Is moody, has up and down mood swings 44. __ Keeps their emotions under control 15. __ Is inventive, finds clever ways to do things 45. __ Has difficulty imagining things 16. __ Tends to be quiet 46. __ Is talkative 17. __ Feels little sympathy for others 47. __ Can be cold and uncaring 18. __ Is systematic, likes to keep things in order 48. __ Leaves a mess, doesn’t clean up 19. __ Can be tense 49. __ Rarely feels anxious or afraid 20. __ Is fascinated by art, music, or literature 50. __ Thinks poetry and plays are boring 21. __ Is dominant, acts as a leader 51. __ Prefers to have others take charge 22. __ Starts arguments with others 52. __ Is polite, courteous to others 23. __ Has difficulty getting started on tasks 53. __ Is persistent, works until the task is finished 24. __ Feels secure, comfortable with self 54. __ Tends to feel depressed, blue 25. __ Avoids intellectual, philosophical discussions 55. __ Has little interest in abstract Ideas 26. __ Is less active than other people 56. __ Shows a lot of Enthusiasm 27. __ Has a forgiving nature 57. __ Assumes the best about people 28. __ Can be somewhat careless 58. __ Sometimes behaves irresponsibly 29. __ Is emotionally stable, not easily upset 59. __ Is temperamental, gets emotional easily 30. __ Has little creativity 60. __ Is original, comes up with new Ideas Please check: Did you write a number in front of each statement? Note. BFI-2 items copyright 2015 by Oliver P. John and Christopher J. Soto. Reprinted with permission.

(Appendix continues) This document is copyrighted by the American Psychological Association or one of its allied publishers. This article is intended solely for the personal use of the individual user and is not to be disseminated broadly.

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Scoring Key BFI-2 Facet Scales Item numbers for the BFI-2 domain and facet scales are pre- Sociability: 1, 16R, 31R, 46 sented below. False-keyed items are denoted by “R.” SPSS syntax Assertiveness: 6, 21, 36R, 51R for scoring the scales is available from the first author. To down- Energy Level: 11R, 26R, 41, 56 load or get more information about the BFI-2, visit the Colby Compassion: 2, 17R, 32, 47R Personality Lab website (http://www.colby.edu/psych/personality- Respectfulness: 7, 22R, 37R, 52 lab/). Trust: 12R, 27, 42R, 57 Organization: 3R, 18, 33, 48R Productiveness: 8R, 23R, 38, 53 BFI-2 Domain Scales Responsibility: 13, 28R, 43, 58R Extraversion: 1, 6, 11R, 16R, 21, 26R, 31R, 36R, 41, 46, 51R, Anxiety: 4R, 19, 34, 49R 56 Depression: 9R, 24R, 39, 54 Agreeableness: 2, 7, 12R, 17R, 22R, 27, 32, 37R, 42R, 47R, 52, Emotional Volatility: 14, 29R, 44R, 59 57 Intellectual Curiosity: 10, 25R, 40, 55R Conscientiousness: 3R, 8R, 13, 18, 23R, 28R, 33, 38, 43, 48R, Aesthetic Sensitivity: 5R, 20, 35, 50R 53, 58R Creative Imagination: 15, 30R, 45R, 60 Negative Emotionality: 4R, 9R, 14, 19, 24R, 29R, 34, 39, 44R, 49R, 54, 59 Received September 4, 2015 Open-Mindedness: 5R, 10, 15, 20, 25R, 30R, 35, 40, 45R, 50R, Revision received February 19, 2016 55R, 60 Accepted February 19, 2016 Ⅲ This document is copyrighted by the American Psychological Association or one of its allied publishers. This article is intended solely for the personal use of the individual user and is not to be disseminated broadly.

Correction to Soto and John (2016) In the article, “The Next Big Five Inventory (BFI-2): Developing and Assessing a Hierarchical Model With 15 Facets to Enhance Bandwidth, Fidelity, and Predictive Power” by Christopher J. Soto and Oliver P. John (Journal of Personality and Social Psychology. Advance online publication. April 7, 2016. http://dx.doi.org/10.1037/pspp0000096), all citations to McCrae and Costa (2008), except for the instance in which it appears in the first paragraph of the introduction, should instead appear as McCrae and Costa (2010). The complete citation should read as follows: McCrae, R. R., & Costa, P. T. (2010). NEO Inventories professional manual. Lutz, FL: Psychological Assessment Resources.

The attribution to the BFI-2 items that appears in the Table 6 note should read as follows: BFI-2 items adapted from “Conceptualization, Development, and Initial Validation of the Big Five Inventory–2,” by C. J. Soto and O. P. John, 2015, Paper presented at the biennial meeting of the Association for Research in Personality. Copyright 2015 by Oliver P. John and Christopher J. Soto. The complete citation in the References list should appear as follows: Soto, C. J., & John, O. P. This document is copyrighted by the American Psychological Association or one of its allied publishers. (2015, June). Conceptualization, development, and initial validation of the Big Five Inventory–2. This article is intended solely for the personal use of the individual user and is not to be disseminated broadly. Paper presented at the biennial meeting of the Association for Research in Personality, St. Louis, MO. Available from http://www.colby.edu/psych/personality-lab/ All versions of this article have been corrected.

http://dx.doi.org/10.1037/pspp0000155